ASUS - RT-BE92U

I use Asus aimesh. Using 2 x rt-be92u. My pov and opinion. Very good system overall. Doesn't like wifi/ ip cameras on mesh and doesn't like smart home products eg bulbs or speakers. I have had to create a separate IoT network for the cameras, bulbs etc as all on 2.4G. Then turn off the 2.4ghz radio on the node forcing everything to main router so doesn't disconnect from WiFi. I have one camera which buffers a bit as quite far from main router.

Asus with Ethernet back haul. Router + 2 APs. Works great, gigabit access all over the house!

Upgraded our RT-AC68U router to a Wifi 6 capable RT-AX86U Pro.  Ran an ethernet cable for wired backhaul, put the AC68U as a mesh node.  The Asus mesh system works really well. 

I've been using AiMesh since the beginning, and it was rocky at first, but now I'm currently quite happy with it. One solid main router and two APs outside. What unifi did you get to replace your setup and do you think it was worth the cost?

Older ASUS AiMesh user here, and similar story. Portal plays shockingly well, and my PS5 isn't even hardwired.

Most mesh systems will support as many nodes as you wish. But not all nodes are created equal. You’ll obviously need fewer nodes with a high powered node vs a cheap node with little range. I would HIGHLY suggest wired backhaul if possible, no matter the hw you ultimately decide upon. Ubiquity has a good solution for your use case at attractive price points. Asus’ AIMesh setup also works well, allowing you to easily tailor the hw for your home’s needs

Asus AiMesh can be configured without an app and uses local credentials for management.

100%. Just make sure you reboot the doorbell once your mesh is set up. It will then hop on to the WiFi node with the strongest signal. You should be able to configure your mesh so that the doorbell remains connected to that node, probably by assigning its MAC address to that node. I have two regular ASUS routers that have their own proprietary mesh called AiMesh. I’ve connected them to each other via an Ethernet cable that runs up through the attic (single story home). It also supports a dedicated WiFi connection between nodes, but hard wired is the way to go if at all possible.

I went from DD-WRT for years to ASUS AiMesh and have been on Unifi equipment for a good four years now. I never have any issues with roaming (3600+ home) and I can fine tune whenever necessary (rare). I love the Unifi and don't plan on moving away any time soon. If you want peace of mind, I definitely also recommend Unifi.

Avoid tp-link and any other CCP networking equipment. Don't intentionally put stuff with backdoors in them just to save a few bucks. Unifi is great but it's expensive and you really should use it wired. If you're just looking for plug and play mesh Asus has good offerings. Their AI mesh system works well