Deco P7 (3-pack)

I like my Tp link deco 400 unit. It can handle Wi-Fi 6 and Wi-Fi 6E

TP Link Deco 6e and Deco 7 have worked very well for us in two homes. The Deco app is very intuitive and easy to use. One of them (Deco 6e) has 26 components on it. This link is to a post I made a few days ago about a feature to look for when shopping for mesh WiFi systems. Lots of dissenting opinions about the advice. But the indisputable fact is that I had connection issues with five components and the ability to manually select the WiFi band fixed them and they stayed fixed. Good luck! https://www.reddit.com/r/sonos/s/L5Owua2okN

I have a 3000 sq ft home and tricked tplink 3 deco unitsand am disappointed with it. Numerous units drop connection and it doesn’t cover my entire house. My 5 yr old orbi system never had these issues

Same, very happy with it.

I use deco pods. One on each floor, I use MoCA to use coax as the backhaul, but Ethernet is good as well.

I use Deco pods with a wired MoCA backhaul.

I've been using Deco and it's been great.

There really is no one Wifi router that will penetrate all walls and building materials and give you a giant bubble of Wifi. As far as signal strength goes, they are about the same. For the best experience on a budget and easy to set up, mesh is typically the go to, like Deco or Eero. Running a wire between the two or more for wired backhaul will make it even better better.

Run ethernet to as many points as possible and install wifi 5 routers at each point. I use archer c6. You will get 500-600 Mbps speeds, but you will save a lot. If you have > 20-25 devices per router and want the most speeds then go for wifi 6e. Don't go for wifi 7 routers as they haven't yet implemented the full spec properly as of date. For wifi 6+, I would recommend Ubiquiti or deco.

If a router only supports 2.4 ghz you will definitely get bad speeds. Due to low bandwidth and network congestion. If you only need one additional router on that floor go ahead with what you have in mind. But I would try to future proof by buying routers which mesh with each other. It will help you scale in the future when you try to add additional routers to reduce deadzones and also improve access point roaming. Buy routers which supports mesh preferably with ethernet backhaul (can also do wireless backhaul with direct line of sight or less interference). Easymesh is the open industry standard but few routers support it fully. Onemesh or decomesh of tplink or Ubiquiti mesh works very well but you kind of get vendor locked. Choose your poison.