What speed are you looking for and what features? When my Intel based router broke, I pressed my AR750S into service on Xfinity Gigabit service. It was good for up to about 500 Mbits/second LAN connected, and the WIFI on 2.4GHz was able to cover my house, but not at super fast speeds. I was seeing about 70Mbits/sec on WIFI. It had no issues working with my non-xfinity cable modem.

Speeds on my Intel based router using Xfinity Gigabit service > 900 Mbits/sec LAN connected, and WIFI on 2.4 GHz > 150 Mbit/sec, 5GHz > 350 Mbit/sec.