Was in the market for refinancing and have seen that homeloans.com.au (Resimac) have dropped their rates. They come with a free 100% offset and allow for loan splitting too.
The rates are 0.1% lower if your LVR is below 60% as well.
Interest Only loans are 0.3% higher as well.
One thing to note, they don't offer any fixed rates so there could be a chance that they hike the rates for no reason.