Just found out xfinity could upgrade your Modem for free. Thanks Xfinity for the Wi-Fi boost. Never had the XB7. Went from the XB6 to the XB8. With instant noticeable improvements. :
T25 SURFboard® DOCSIS® 3.1 Cable Modem for Xfinity Internet & Voice
Comcast is trying to get in on the mesh router hype - The Verge
Amazon.com: ARRIS SURFboard SVG2482AC DOCSIS 3.0 Cable Modem & AC2350 Wi-Fi Router , Comcast Xfinity Internet & Voice , Four 1 Gbps Ports , 2 Telephony Ports for Digital Voice , Up to 800 Mbps : Electronics
Comcast Launches Its Most Powerful Internet Device Capable Of Multi-Gigabit Speeds With WiFi 6
Amazon.com: NETGEAR C3000-100NAS N300 Cable Modem Router WiFi DOCSIS 3.0 (C3000) Certified for Xfinity from Comcast, Spectrum, Cox, Cablevision & more : Electronics