Asus vs Unifi vs ?

[2301]

"I don't know why you have 2x 5GHz radios enabled when the units are wired."

Simple, some devices connect to lower 5GHz channels, some to higher (above 100) channels. The devices are free to chose which band will connect as joint SSID is used, and it is working fine.
As Asus removed this options I decided to change the brand and as I have very few 6e and 7 devices my concern is the 5 GHz band, as already mentioned.

 

[Tech9]

So let me see... you have not really needed configuration with 2x 5GHz bands, got mad on Asus because of some firmware limitation and want to spend $680 on a new UniFi system which has 1x 5GHz band and 1x 6GHz band? Whatever was using your 2x 5GHz bands will be forced to use 1x 5GHz band and your very few 6GHz capable devices may eventually use 6GHz band... I'm sorry, but this plan doesn't make sense to me. I like UniFi, but can't recommend impractical solutions.

If you want to replace AiMesh with UniFi - sure, it works better, go ahead. If you want to replace your AiMesh for the reason above though - better spend $680 somewhere else. Find which one of your 5GHz band works better and disable the other. Problem solved for free.

 

[tgl]

As for the MIMO question --- very few clients are 4x4 MIMO, it's mostly 2x2. Now in principle a 4x4 AP can talk to two separate 2x2 clients concurrently, but that requires the AP and both clients to support that mode --- and again, very few clients do so. Maybe this will be better in a few years, but right now the only real use of a 4x4 radio is if you are doing wireless backhaul to another AP with a 4x4 radio. (Then you get 2X the backhaul bandwidth, which reduces the performance penalty of wireless backhaul ... but it's still less good than wired backhaul.)

Bottom line is that 4x4 radios today are mostly about inflating the marketing numbers for APs.