Decided to get a new router even though my Openwrt-imaged TP-Link WDR3600 is still going strong! Have always been interested in the Merlin image and after linking from another Ozbargain post for the AX58U, I came across this. The lowest price I could find for this entry-level WiFi 6 router that has at least one good review - https://techcyn.com/reviews/asus-rt-ax56u-review-the-best-en.... Seems like the lowest price so far on OzBargain also.
Can get a further $10 through eBay (thanks to RogueWolf for this) using the code PPSS100.