After 28 days 23 hours of continuous use both my AC86U and my 2 AC68U's are running 386.14_2 flawlessly (after a dirty upgrade) as far as I can tell, in my current configuration, as per my signature below.
I have gone TAB to TAB through both my AC86U and the AC68U running on my LAN side interface. All pages/tabs render correctly.
This has been a great period of time being part of this site and having an opportunity to benefit from the clever work of a lot of great people.
The AC68U has had a great (and very long run) with Asuswrt-Merlin. I seem to recall that
@RMerlin has mentioned Fresh Tomato (The work/developer of whom he is familiar), for those who, for whatever reason, want to use a different firmware in the future.
For the future, I am leaning toward bypassing the AX models (which are already a few years old) and jumping on the BE models like the models that
@Tech9 recommended.
On sale at Amazon: https://www.amazon.com/ASUS-RT-AX86U-Extendable-Forwarding-Subscription-Free/dp/B0BQ417K47/?tag=snbforums-20
www.snbforums.com
The high cost is a bit prohibitive for me now. But then I'm thinking maybe buy an AX model for now as an interim router until the prices of the BE units drop. Could always use the older AX as an emergency backup. Just have to use my imagination a bit and figure out what is most important to me and how I would set up my router(s) on my home network.