Orbi AC2200 Tri-band WiFi Router

For 10 Mbps up, you don't need much. Look for used: Modem: Arris SB6183 or SB6190 - docsis 3.0, cheap, reliable. 20-30 used. Router with SQM: - Netgear R7800 - OpenWrt supported, cake SQM works great. 40-60 used. - Linksys WRT3200ACM - same, good SQM. 50-70. - Ubiquiti Edgerouter X - 30-40, SQM built-in, but no WiFi (add access point). Mesh: - TP-Link Deco M4/M5 - 30-50 per node used. Good enough for your speeds. - Netgear Orbi RBK20 - older but solid, 60-80 for pair. Cheapest SQM option: Keep Xfinity modem, buy used R7800, flash OpenWrt, enable cake. Done. Your bottleneck is the 10 Mbps line, not the hardware.

Damn… I’ve got the RBR20, 2 RBS50Y, 1 RBW30, 2 RBS20, and 1 RBS50 unit all full green connections covering ~0.9 acres, pool house, and 2 stories plus basement. My internet is 217d/24u. My WiFi never drops out or overloads and I’ve it now for ~5 years. I can honestly say mesh is the best idea ever (when it’s implemented correctly I suppose). Of course I didn’t start with 1 main and 6 satellites. That slowly grew. And trying to find older units that are compatible nowadays is nigh impossible (without *paying* for it). My main unit is 1/3 of the way across my first floor, one foot off the floor. A 20 is in the middle of the entire house, seven feet off the floor. The other 20 is on the second floor, eight feet off the floor. The mini 30 unit is in the middle of the basement plugged into an outlet in the ceiling. Two outdoor units connect to each other through the main, and the pool house 50 unit connects to the outdoor (that’s main to outdoor 1 to outdoor 2 to poolhouse, and the connection is flawless). So don’t let anyone tell you about maximum number or stringed connections. I have three satellites in sequence, and six total satellites.

Since I've had Sonos gear in my house, I've run three mesh wifi routers: a Netgear Orbi, a Tp-Link XE-75 Pro and now a Eero 6E. By far the Eero has been the easiest, most stable and most reliable of the bunch. The TP-Link was absolute garbage and nothing but a headache for the 6 months I had it.

got a free old orbi mesh from a friend that moved away. works great

If you need to go mesh and not hardwired for the APs. I’d recommend Netgear Orbi. They use a dedicated radio frequency for backhaul between the mesh. That leaves 2 bands for WIFI only. Competing products, such as Ubiquiti, typically share backhaul on one of the WiFi bands and that reduces client throughput. I’ve had 2 different generations over the past 10 years and it works well. I upgraded because I wanted the faster backhaul and WIFI 6 on the newer gen not because I had an issue with the old system.

I had a Netgear Orbi mesh router active from the old home internet that I plugged into the LAN port on the Starlink router. Any reliable mesh system will work. Get one with WIFI 7 so you get the quickest speeds.

I've had good experiences with Netgear Orbi and with TP-Link Deco mesh systems. I'm currently on a Deco BE22000 WiFi 7 3-Pack mesh and it works very well, some teething pains when it first came out that were fixed via firmware but that's about it. I get well over 1Gbps via on WiFi 6E and 7 devices. My past Mesh was an Orbi and that worked great for 5 years or so. Primarily consider the speed of your internet connection and try to look for a mesh that can make use of that bandwidth. Generally speaking a WiFi 6E mesh should do the job and considering your layout, a 3-unit mesh would be ideal specially if you can connect them via ethernet cable for backhaul.