Why do you have to drop your wifi? I had just wifi with them for years. Only reason I switched is that our HOA has a deal with Astound that is significantly less expensive for the same speed. Even with Xfinity, you can use your own router. Just look up the ones they suggest. You do lose some technical support if you use your own.
Before I finally got Fiber, I had my own cable modem and wifi router with Xfinitiy. As @ROCKSS said, renting is a money pit. Xfinity will support troubleshooting with your own modem, and 99.9% of the time router issues are fixed with a reboot. With AT&T fiber I still use my own router instead of the built-in router that came with the fiber modem. Better antenna and I can control the DNS settings with my own router, meaning I can use my PiHoles to block ads on my network.
