RT-AC66U B1

I cured my WIFI issues when I invested in a ASUS AiMesh setup with a RT-AX86U Pro as main and 2 RT-AC66U as nodes with wired backhaul. Mesh is the best way to provide better coverage in a multi floor home. The nice thing about this setup is that I can have wired connections on each floor. The Home Theater is in the basement and has a 8 port switch attached to its Node. You gain much flexibility with a Mesh.

I have built a 5-node mesh system with those Asus routers (RT-68U + RT-AC66U B1 + RT-AX86U) for my house, garage and guest house, works great!. Bought them all for around 25€ per unit on Facebook Marketplace :-)

If that Asus is the RT-AC68U then it's at least meshable if you buy a newer Asus router to use as your main router. That's one of the things that I like about using AiMesh. You can get a better router, and still put your old one to work somewhere else in the house. My current RT-AX68U Pro replaced by RT-AC86U, and that replaced an RT-AC66U. All three are currently meshed, so the garage and driveway get a good signal, as well as the rest of the house.

I like Asus since you don't have to go all-in with mesh on day one. Wireless backhaul is an issue with every mesh system. I started with an AiMesh Extendable Router and I can add anything from the Asus line-up if I need better coverage. And, yeah, that RT-AX86U Pro is pretty nice with its 2.5 Gbps port connecting to my Arris cable modem. This computer is wired to a LAN port and works very well, and the wi-fi around the house is very reliable.

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