Best XFINITY Cable Modem - Reviews
As mentioned in other posts, I'm a big fan of the Netgear CM500 and CM600. I have used the CM500 for 3 years now, and even though it may seem outdated, it is not and is able to handle my 100 Mbps with XFINITY. I use mine with the Netgear Nighthawk R6700 WiFi Router. I like having a separate router because if the the modem or router ever fail, it wouldn't be as much to replace as a WiFi cable modem with a built-in router would cost.
My Personal Setup - Netgear CM500 Cable Modem & Netgear Nighthawk R6700 WiFi Router
These two handle my 100 Mbps speed from Comcast with ease, no lag, no dead zones with WiFi on first floor. I could add a WiFi Extender to have access upstairs but isn't really necessary for me.
Netgear CM500 - Comcast XFINITY Cable Modem Review
The Netgear CM500 is a great choice for XFINITY tiers up to and including 150 Mbps. Mine has been running strong for over 3 years with no issues. I give the CM500 cable modem 5 out 5 stars.