This was posted 1 year 2 months 4 days ago, and might be an out-dated deal.

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Daikin Air Purifier MC40 / MC40YPVM $269 Delivered ($255.55 with eBay Plus or Targeted Code) & More @ Daikin eBay

2510
PLUSMAR1SNSMD3...

Very impressed with mine (MC40).

FYI: if you crack a fart, it will ramp up the fan.. but you can adjust the sensitivity if you eat a lot of beans.

You can dim the LEDs on it, or have them turn off when idle (except the power LED).

The HEPA filter is cleanable, and expected to last 10 years in the average environment.
Replacement filters can be purchased via aliexpress etc, or via daikin resellers for genuine.

It's quiet and doesn't use much power.

My older daikin purifier has been going strong 10+ years without a hiccup..
still on the original filters.. imo, they are designed/engineered really well..

I had a look but can't determine the normal sale price.
But seems like a better deal IMO compared to others I've seen lately on ozb.

Before Impulse Buying

Read the comments below for alternative views. These may induce amounts of ozone* into the air. This doesn't concern me. I don't think the MC40 acts like ionizers of olden days (trying to engage the entire room) but rather, it works to embiggen particles to allow the filters to work/be cleaned more efficiently. Still.. If you have a zero ozone policy.. you may want to look for something else.. @Bargainshooter has given some alternatives below

update

Daikin responded to user Eightimmortals stating (re MC40) "the percentage of ozone in the room will not exceed 0.000005%.This sit[s] well below the standard." refer: https://www.ozbargain.com.au/comment/13466116/redir

The MC40 has streamer tech.. but not the 'active plasma ion tech' that the larger models have.
If you are concerned, contact Daikin about your specific model.

website for comparison/side-by-side/specs:
https://www.daikin.com.au/our-product-range/air-purifiers/ai…

Brochure: https://www.daikincatalog.com/das_0001/book/#target/page_no=…
(links to Page 7 with model comparison information)

MC30 seems to have some more stock (08/03 730pm)

MC30: https://www.ebay.com.au/itm/224984333480

MC40 has been reported to have more stock occasionally.
MC40: https://www.ebay.com.au/itm/224977869261

MC55: 588.05 with ebay plus https://www.ebay.com.au/itm/224977880957
MCK55: $778.05 with ebay plus https://www.ebay.com.au/itm/224977893967

Replacement filter examples:
https://www.aliexpress.com/premium/KAFP080B4E.html?catId=0&i…

I assume Daikin have an agreement not to sell filters/parts directly/online.
If you want genuine filters… contact your local dealer: https://www.daikin.com.au/find-dealer

Original PLUSMAR1 eBay Plus Coupon Deal
Original SNS Targeted Coupon Deal

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closed Comments

      • +1

        You can get air purifiers that don't generate Ozone. And no one is saying air purifiers are a replacement for ventilation.

        • -3

          Air purifiers are a replacement for ventilation. There — I said it. So, who else runs their air purifier 24x7 with the windows open?

          • +4

            @tharlow:

            Air purifiers are a replacement for ventilation.

            Wrong.

      • +5

        @tharlow RUOK mate? Seriously, if I don't like any product, I will make one post about it and leave it to others to decide whether to buy or not (after all its their money).

        But here you are, down-ramping this product since the deal went live and so far have made 15 comments. You need better use of your time tbh, may be go for a walk?

        • +1

          @tharlow is acting as a negsink.. trying to soak up our ration of 5 daily negs for some reason.

    • +1

      Maybe good for someone have hayfever or asthma who is allergic for pm2.5 and pollen. Hopefully it can alleviate the symptoms

      • +1

        My friend WD40 agrees with you…

    • +2

      It is really good if you have hay fever, Asthma or animal allergies.

      Otherwise can reduce cooking smells, or just smells in general. Remove VOCs from the air to make the air in your house a bit healthier. Good for when there are massive bushfires all over the place.

      For most people in Australia it is not a need, but a nice to have.

    • I use one to manage hayfever along with a dryer instead of hanging cloths outside during peak pollen season

    • +1

      @Danger if you had atopy, severe allergies, athma, sinus polyps, lived in a certain type of house, and/or, lived certain locations, it would be obvious. I envy you that you need to ask the question.. and I upvoted it.. because surely forums should encourage questions.

      um.. one estimate claimed 5000 people die prematurely each year in australia due to pollution.
      fireplaces probably cause thousands of admissions to ED each year.

      i've struggled for much of my life.. mostly due to dust-mites.. and the bst@rds are everywhere.
      sometimes my sinuses get so bad I look like alan rickman… but i can't take my purifier everywhere.

  • I currently using Xiaomi Pro H
    Any suggestion or comparsion between Daikin Air Purifier: MC40 vs Xiaomi Pro H?
    I tried googled it but I cant find much and not really a tech savvy

    • Your Xiaomi’s more than sufficient and arguably would be better than this Daikin if it uses genuine HEPA filters.

      • to be honest, I been using it for 1.5 yrs now just for my own rooms only, but it seems lacking of that ozone feature and where my pc desk still very dusty, my living area near bush and air quality are excellent and PM2.5 was always 1, I am not sure if see others comment in regarding to farting/cooking order detection and ppl seems can feel the air are fresher, unfortunately my big PRO H does not give me that feeling at all. I use it 24/7. I am sure it helping with hayfever that stuff. so I was not sure if that ozone thing will make a difference.

  • Got 1, and they are now gone. Out of stock !

  • +5

    Got mine today

    For all you ozone propagandists, the streamer only operates on High Fan Mode with an audible hissing noise so you can turn it on and off

    Keep calm and carry on, you can continue to push your inferior Xiaomi gear now

    Excellent price and happy so far very quiet

  • +1

    Ozonator, or purifier? Hmmm

    Either way, it's OOS again.

  • MC30 currently back in stock

  • +2

    MC40 back in stock again. I just ordered one!

  • +1

    Same got the mc40. Was spewing i missed out yesterday

  • +2

    Daikin responded saying they'll be creating a FAQ on ozone soon due.

  • Has anyone else gone on a deep dive regarding the streamer discharge and ozone creation? I'm still unsure whether the streamer discharge technology is safe after reading a bunch of journal articles.

    • +1

      "the percentage of ozone in the room will not exceed 0.000005%.This sit[s] well below the standard." — This is just a fancy way to say it's less than 0.05 ppm which IS the current FDA standard (https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfcfr/cfrsearch.cfm?fr=801.415#:~:text=(5)%20To%20generate%20ozone%20at,as%20a%20germicide%20or%20deodorizer.). Doesn't seem well below to me.

      It seems like people can do better these days. E.g. "Sharp says it produces a maximum eight-hour average ozone concentration of 0.003 parts per million" (https://au.pcmag.com/home-security-products/67905/sharp-fxj8…)

      • Yeah exactly, it seems their description of the percentage of ozone is simply the current FDA standard as you've indicated. So the question is, is it lower than 0.05ppm or is it 0.05ppm?

        • It was strange I hadn't seen this information posted here yet.

          "Ozone concentration (Maximum) in test chamber is less than 0.01 ppm in 30 minutes’ operation of Air Purifier Model MC40UVM6 under highest fan speed. The ozone emission monitored in the test is within the allowable limit of no more than 0.05 ppm in Singapore National Environment Agency (NEA) “Guidelines for Good Indoor Air Quality in Office Premises”. (Tested by TUV SUD PSB Singapore, Feb 2020)"

          https://www.passionair.com.sg/product/daikin-air-purifier-mc…

  • +3

    Got it for $249 (had a $20 discount code from https://pages.ebay.com.au/buyer_coupons/2023/snsmd3/).

    Thanks op. First air purifier. I get so much dust it's not funny and $250 felt like the right price to give a purifier a go. :)

    • +1

      could have filled your room up with mid 1990s PCs.. nothing traps dust better

      • +1

        Hrm. That's a fair call. I probably wouldn't even have to turn them on, except in winter where they could double as heaters.

  • FYI, seems average price in Malaysia (Shopee MY)
    https://shopee.com.my/Daikin-Air-Purifier-With-Streamer-Elec…

    • +1

      interesting, the model number is slightly different but that may be due to the country difference. However, for some reasons, it is advertised as suitable for up to 62 sqm in Aus and 31 sqm in Malaysia!

      Edit: Found more details for AU model, apparently 31sqm in 30 mins and 62sqm in 1 hour.

    • that might be pretty much the same model?

      according to the daikin website 31m2 refers to 30mins, 62m2refers to 60mins as to:
      *Room Size is calculated according to NRCC-54013 standard using cigarette smoke CADR tested according to JEM1467.

      if so, malay site just shows the 30min figures: https://www.daikin.com.my/air-purifier/

    • the malay daikin site shows the rrp of mc40 as 1070RM = $358 (no gst) so about $100 cheaper than aussie rrp prices (- gst).

      unsure if the 800RM price is avg or clearance/spesh as well.

  • +2

    I will just dump information I found googling japanese websites, translated by Chat GPT
    http://motosyuuriyadesu.blog.fc2.com/blog-entry-13.html

    filter:
    This new type of filter has a dust collection efficiency of 95% even after three years, and 70% even after ten years. The lifespan of the filter refers to the point when the dust collection efficiency drops to 50%, which means that this filter has a lifespan of over ten years. According to calculations, it can last up to 20 years. Well, the calculation of lifespan is based on the assumption of smoking five cigarettes a day, so the number 20 doesn't really mean anything, but it can be used to compare with other methods. Also, the amount of fine particles captured after ten years is 1.19 times higher. In other words, it can be said that this is a filter, or a system, that can capture fine particles well, despite being sparse.

    Well, the tobacco smoke used in this test is 0.5μm or less, which is a size that the electric dust collection method is good at collecting, so it is natural that it captures a large amount of fine particles. Unfortunately, we have no idea how well the high-performance filter of the MCK55P performs. If it were HEPA, we could argue that the electric dust collection method is superior for capturing fine particles, but in this case, we don't know if it's good or bad.

    Also, since this test is only for tobacco smoke, it is a separate issue from the overall collection efficiency. The fact that the dust collection efficiency of the filter exceeds 70% even after ten years means that it may have a low collection rate for particles larger than 0.5μm. Otherwise, we wouldn't get a number like 20 years (laughs).

    Increasing the lifespan or particle collection efficiency of the filter is not actually a difficult task. Simply making the pleats deeper, in other words, increasing the surface area of the filter, can be addressed to some extent. In fact, there are some commercial filters with a depth of about 30cm. Naturally, the larger the size, the higher the cost.

    Since Daikin's filter is not like these types, it is difficult to believe that it exceeds overall collection efficiency or quantity, even if it has an advantage in electric dust collection. It is more reasonable to consider it as a filter that extends its lifespan by moderately allowing particles to escape.

    Streamer Technology
    The high-speed electrons generated from a type of plasma discharge called "Streamer discharge" combine with oxygen and nitrogen in the air to transform into active species with powerful oxidative decomposition power, removing allergens such as mold, dust mites and pollen, as well as harmful chemical substances such as formaldehyde. (From Daikin HP)

    Although the term "Streamer discharge" may seem like a special phenomenon, it simply refers to a filamentous discharge and is created using a corona discharge unit, which is the same principle as an ion generator. Roughly speaking, lightning is also a type of streamer discharge. In other words, it is a term that refers to a phenomenon. Therefore, it is natural for it to travel at the speed of light, and if it were at the speed of sound, it would be a big problem (laughs).

    As usual, Daikin is making a lot of claims, but as we discussed last time, the actual effect is likely due to ozone. Above all, they use a catalyst for deodorization, so it is safe to consider this as a low-power ozone generator. In reality, it would be more appropriate to say "oxidation catalyst," but if they wrote it that way, it would reveal that ozone is the main ingredient, so they probably chose to be vague (laughs).

    As a side note, molecular ozone is surprisingly slow to react, and it takes quite a long time to disinfect and deodorize. However, when it reacts with an oxidation catalyst, it immediately transforms into active species OH radicals and annihilates bacteria and odor-causing substances. In other words, whether it is ozone, plasma clusters, or the photocatalyst that I will explain later, they are all just means of generating these OH radicals.

    Let's get back on track. In other words, this high-speed streamer is the same as a negative ion generator, except that it does not generate positive ions from plasma clusters. However, Daikin adjusts the streamer discharge to improve efficiency, and uses a more powerful output than plasma cluster generators. Above all, the biggest difference from plasma clusters is that while they release ozone into the room, the high-speed streamer releases ozone inside the air purifier.

    The biggest advantage of the Lightspeed Streamer is that it releases the generated ozone internally, which can be treated with deodorizing catalysts used for deodorization. Deodorizing catalysts deodorize by decomposing ozone into active species such as OH radicals. Therefore, there is less risk of ozone leakage outside. As a result, high-output models, which can generate a large amount of ozone, have a higher disinfecting and deodorizing effect.

    However, this only applies to models that do not have a humidifying function. Models with a humidifying function use some of the ozone generated by the Lightspeed Streamer for the disinfection of the humidifying equipment via a bypass. Therefore, there is a high risk of ozone leakage outside, and it is not very safe.

    In addition, there is a benefit to preventing the growth of bacteria on the dust collection filter etc. by constantly exposing the air purifier interior to ozone. However, this does not apply to humidifying filters. Conversely, if ozone with a concentration that can completely disinfect the humidifying filter is blown, it will definitely cause health damage (laughs).

    Therefore, ozone can have a significant effect if used correctly, but Daikin ruined it by being greedy and trying to reuse it. Regardless of whether the humidifying function is used or not, a small amount of ozone is definitely leaking from Daikin's humidifying model.

    Manufacturers, not just Daikin, often say that they meet safety standards that are below the acceptable concentration limit of 0.1ppm by half, or 0.05ppm, which is just the upper limit of the allowable concentration in the work environment. There is no guarantee that this value is safe for newborns or elderly people with respiratory diseases.

    In addition, ozone is heavier than air, so the concentration near the floor is higher. Small children who can only crawl or pets will continue to inhale higher concentrations of ozone than adults. It is impossible to say that it is safe because the concentration is only half of the safety standard for healthy adults working in factories.

    Furthermore, the Lightspeed Streamer cannot be stopped. It can only be adjusted for strength. This is because if the Lightspeed Streamer is stopped to use ozone for deodorization, most of its deodorizing capability will be lost.

    • Thanks for that. I am satisfied that some ozone will leak from the MC40, despite not having the humidifying function. And while the small amount of ozone is safe for healthy adults, it may not be so great for small children or pets.

    • +2

      Thanks for the resource. So there’s still a risk then. And as someone said, for Australia, air purifiers are nice to have rather than necessary, unlike some other parts of the world. Therefore, the risk, no matter how small it is, is just not worth it to me.

    • I am reading it as only models that have humidifying function (so not MC40) are at risk of high leakage? Did I misread?

      • yeah that's what is says.
        but i'm unsure who this blogger is, their background, their motivation etc.

        if I had a newborn baby, I'd probably consider how/when/where I use it.. at least until daikin do a FAQ based on O3 or release some official info.. just to be on the safe side.

        but we/no visitors have never detected o3.. been using daikin purifiers for over a decade, the mc40 for a couple of weeks.

        (according to wiki: Ozone's odour is reminiscent of chlorine, and detectable by many people at concentrations of as little as 0.1 ppm in air.)

        • But this emits ozone at or around 0.05 ppm, so you wouldn't be able to smell it. But it's there.

          • @anarky: yeh i figured it's there.. just not at any concerning level.

            i thought daikin stated the entire room won't exceed 0.05ppm.. not what it actually emits as a rate.

            (their wording wasn't extremely clear though)

      • It says all the models in this deal leak ozone, but the ones with the humidifying function leak more.

  • +1

    Thinking of getting one more!

  • +2

    I can confirm about the fart sensor…. It went in full power mode as soon as it picked it up

  • Well. I got it. It's smaller than I expected. Quiet enough by default that I had to check with my hand if there was any actual air flow.

    Also, its first comment on my air quality was an orange light for dust. Given how quickly dust accumulates here that's a thumbs up for accuracy but a thumbs down for rubbing it in. ;) :/ :)

    • Motorcycle just went past. PM2.5 indicator hit purple, the 2nd highest level. Fan is nor working on full I think (or maybe turbo). I can hear it and it's going hard.

      • Orange now (3rd lowest level). Fan dropped in speed. Whee! :)

        • Peach (2nd lowest) and fan dropped to almost inaudible.

          Now green (lowest) and fan dropped to inaudible.

          Window has been open throughout.

  • Daikin Malaysia provides better information resources on the air purifiers, including some YouTube videos at the end of the page.

  • +1

    Concerned users could consider purchasing an O3 detector.

    Perhaps something like this (assuming it works as described) may be good to have in any case for general pollution:
    https://www.aliexpress.com/item/1005004537501551.html?spm=a2…
    (only the $143 version detects 03)

    or something handheld:
    https://www.aliexpress.com/item/1005001469409838.html?spm=a2…
    (seems similar to one on amazon.com.au for $150)

    btw.
    it may be possible the mc40 lowers ambient o3 levels (?)
    i believe it may have an internal catalyst to destroy the o3 byproduct it creates, along with any ambient o3 it may happen to suck in.

    perhaps we need to talk to Dr Karl

    • +3

      Just unboxed my unit.

      You can simply unplug the streamer unit's power cable and hide it in empty space, no need to remove the entire streamer unit. The machine will operate fine without it.

      Only takes less than a minute to unplug it. Refer to the manual for details https://files.ozbargain.com.au/upload/203846/102248/screensh…

      • that's awesome to know..
        I'll keep mine connected because I believe the benefit outweighs the risk.. (may also help the filter last longer).

        probably illegal but i guess you could wire up a $4 remote operated switch/relay to turn it off/on as desired.

      • +1

        Disclaimer: Not an expert.

        I don't believe the air purifier is going to work as intended if you do disable the streamer: https://www.expansion-electronic.eu/images/schede-new/HEPAvs…

        Daikin claim to use electrostatic precipitation (I assume MC40 uses the same): https://www.daikin.co.uk/en_gb/knowledge-center/air-purifica…

        The Daikin air purifiers use electrostatic filters, which as I understand, only work properly if you have the ozone for it to work. The ozone is what is causing the particles to attach to the filters. Their HEPA Filter and Deodorising Filter are both electrostatic.

        I suspect their claim that their HEPA Filter lasts 10 years is because of the ozone generation, and without it, you will find the air purifier to be much less effective than non-ozone air purifiers and the filter might last a while, but eventually you will find the bacteria will build up on the filter without the streamer activated.

        Onto another point, their marketing by calling it "Daikin Streamer Technology" without putting ozone in the marketing is dubious, an average consumer would have no way of knowing from Daikin's marketing at first glimpse that this contains ozone generation. Ctrl + F "ozone" on their eBay page, no results.'

        Some more information: https://oransi.com/blogs/blog/electrostatic-precipitator

  • +2

    It has successfully detected a smelly baby and neutralised her. :)

  • +1

    Bought one this Wednesday, delivered Thursday. Wife like it and ordered another

    • yet you don't upvote the deal? :p :p i poke my tongue at you twice, once for each order.

  • Received and running. Honestly doesn't feel like it's doing anything but we usually have our windows open. Will probably end up returning.

    • Turn up on a higher setting

  • +2

    Its been great so far, the little one did poop in his nappy and this device went berserk - I wondered why until I find out the reason..lol

  • This is an awesome deal! Before I hit the buy button (:-), can anyone here comment on the child safety of using the product, especially regarding the "small amount of ozone emitted"?

    • +2

      There is enough discussion on the thread which should help you to make up a mind.

  • +3

    Well, interesting thing from yesterday. Left the window open in the room the machine is in and left it working. Outside the window are roses. I've never been able to smell them inside the room before (and I bought ones advertised as having a strong smell) until last night where the whole room was filled with the gentle aroma of roses.

    Joy. :)

  • I’ve seen the link to the aliexpress filter, but does anyone know what Daikin charges from their dealers? I just ordered a MC40

    • why think about 10 years in the future?

  • FYI all.. the MC40 manual states:

    "Streamer operation is conditional on the degree of air impurity.
    During operation, the streamer discharge may generate a hissing sound, however, this does not indicate a defect.
    In addition, the sound may lessen or change in tone depending on the operating environment, however, such changes are normal.

    In some cases the air outlet may emit a slight odour as trace amounts of ozone are generated. However, the amount is
    negligible and is not harmful to your health."

    https://www.daikin.com.au/sites/default/files/daikin-air-pur…

    • update the new code plz APAYDAY3

  • pulled the trigger, was offered a $20 code by ebay and bought discounted gift cards via shopback to get that extra 3% off…

  • +5

    The MC40 is $229 when using the afterpay coupon, APAYDAY3

    • My order hasn't arrived yet. It's time to refuse the delivery and reorder LOL

  • bought this, it's a lot bigger than I thought it would be :/

    • +1

      Funny. I said the exact opposite to the delivery guy.

      • (Assuming you’re not making a joke here) What size room are you using it for? My room is way smaller than 62m2, did I mess up?

        • So's the room I put this in. I think 12m2.

          That said the window is always open so I figure something that can cope with 62m2 will do just fine with a 12m2 room with an open window.

          Also I think it helps keep it quiet, which it is most of the time. It's as if it's not there which is a joy in and of itself. :)

          • @the discombobulated panda: perhaps setting it to 'low sensitivity' mode would also make it more efficient/suited to smaller spaces.
            (I was actually wondering if i could hack one for my car.. the ultimate cabin filter)

            • @jinkerjinx: I thought about it but that'd just make it activate more often. ATM it's almost always silent and activates often enough not to be irritating.

              In fact I've not turned it off since I got it and I hate noisy products. My next desktop pc build is going to be a pain. :)

              • @the discombobulated panda: yeh I hate noise/LEDs with a passion..
                but these never annoy me.. the activated sound is almost peaceful to me.

                my 14 year old daikin fan bearings are still silent.. no issues.
                so i'm hopeful these newer models will have the same longevity.

        • You can see it to scale on their product page. It has an augmented reality feature - very futuristic!
          https://www.daikin.com.au/our-product-range/air-purifiers/ai…

          • @owns50cats: Doesn't look too bad there… Mine's still unopened as wasn't sure if I'd return it, maybe the box is significantly bigger than the product

            • +1

              @fredblogs: It's 50cm tall and 27 cm square. You can work that out from the box to get an idea of size. I find it unobtrusive.

              FYI: The box is 60cm x 33cm square.

            • @fredblogs: I don’t find it big

              It’s about the size of an ATX desktop PC

      • +4

        My delivery guy is just the size I expect him to be…

    • +1

      No info on how often you have to replace consumables (Daikin has 1 and you replace it ever 10yrs).

      Also no info on noise levels.

      Both are (at least to me) very important and the first stage filters for a product. Even before price.

      • +1

        Being an Anko product, I have no doubt it is inferior, at least in build quality. I'm sure it is higher in noise levels even though reviews are favourable on this aspect. But interesting to look at nonetheless.

        Kmart:
        Coverage 22-38m2
        Air delivery 320m3/h
        Daikon:
        Coverage up to 62m2
        Air delivery 240m3/h

        I'm surprised how well the Kmart one is reviewed actually, even in facebook mould forums.

  • If it is normal to have rubber/plastic "new" unit smell?

    • +1

      maybe it is ozone …….. check for any symptoms

    • It is normal for air purifiers to have that type of smell in their first week I believe.

      It is possible to smell the ozone if you're sensitive enough to smell it. I am speculating that if you have it in a small room, and there's no ventilation, then it might eventually build up to an amount you can smell.

  • I received mine 2 days ago and put it in my bedroom running whilst I slept, I have high sensitivity to dust and pollen and my room accumulated a lot of dust. First night was great, the air felt a lot cleaner and my nose was not blocked or runny when I woke up. However I write this now on the second night, having been woken up by a slight sinus discomfort/pain/itchiness which I have never felt before. I have now turned it off and am wondering if I have cleaned the air too much for the size of my bedroom or the perhaps it is ozone output related. Is anyone else getting sinus discomfort?

    • Is anyone else getting sinus discomfort?

      Not at all, been using it for over 3 weeks now and have been great so far. May be you are catching cold? I don't know..

    • Nothing amiss here. Nasally or otherwise. Just have reduced dust levels.

      • Same. Much better than the xiaomi one I have in detecting dust or odour.

    • Nope.

      Nor with its forerunner, the Placebo 2000…

    • +1

      what did you end up doing?

      • I run it up until I go to bed and haven’t experienced the same discomfort. I’m not sure if it is related or it was some sort of sickness, but I might throw in an overnight run to see if I experience it again.

        • If you do please report back. I'm curious.

          Only time that I've turned mine off was when I cleaned the filters of dust and I've not had issues so your experience is interesting. :)

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