If you really wanna dig into it beyond what that Wirecutter article (largely) summarizes, maybe check this out from Dong Knows:
https://dongknows.com/best-wi-fi-6-routers/
Interestingly, he seems to like the Netgear line's performance much more than Wirecutter does.
_Man_
PS: Yes, his...
Agreed, except maybe that suggestion of the Netgear RAX45. Based on the Wirecutter article which only tested what seems to be the previous gen models, I'm guessing the similarly priced TP-Link model should outperform that Netgear in general.
But definitely agree about going w/ Costco for such...
Personally, I wouldn't go for the cheaper options if one wants excellent all-around performance and some degree of future-proofing, which I assume would be anyone specifically caring about something like Wifi-6 and/or is paying extra for Gigabit service.
Also, I didn't really dig into it, but a...
IF you want a good (but fairly expensive), new, wifi-6 router to replace that old AirPort Monolith, I could certainly recommend whichever ASUS model -- I currently use their RT-AX86U in a small apt myself (and used their much more expensive, 6-yo flagship model alone to service a modest-sized...