Archer BE230

I like my tplink archer be230

I've been pretty happy with my tp-link be230

If the BE230 is in AP mode then all devices connected to it are being bridged to the main ISP router's network. It'll give the guests regular IP addresses on your main subnet so no isolation from main network. Easiest option would be to check if your ISP router supports gateway/modem mode (as u/lordwerwath suggested) and then use the BE230 to run both your main network and a separate guest network, all in one unit. Definitely get a second opinion on this part, but if your ISP router doesn't support gateway/modem mode, you can go down the double NAT route where you place the BE230 in router mode (instead of AP mode) and plug it into your main router. Devices will be separated on their own private subnet, but only to a limited degree, as devices on the guest network will still be able to see devices on the main network, and not the other way around. (Not totally sure on this part, so please correct me if I'm wrong)

I had a $500 TPLINK AXE 16000 high end super crazy router provided by my fiber company, the thing was a piece of garbage and dropped connection for a few seconds every 10 minutes after about a year. Made gaming impossible. I went on Amazon and bought [this $90 WIFI 7 router](https://www.amazon.com/dp/B0DC99N2T8) and have had zero issues and just as good coverage in my home (1650sqft). It supports mesh, although I've never used it so can't comment there. My main point is that buying the expensive router doesn't necessarily mean it's going to be any better.

Honestly, for that application a simple TP-Link WiFi 7 router would be fine... Like $80-$100 at Walmart for the BE3600... My son has had one in his apartment for months and it's been flawless, has never had to reboot it once. Very avid gamer, PC and every console you can think of made in the last 20 years