ft. Best modem-router combo Arris SURFboard SBG8300 gateway $238.18–$249 2.35 GB 2,800 sq. ft. Best high-end router NETGEAR Nighthawk WiFi 7 RS700S router $649.99 19 GB 3,500 sq. ft. * ...

Comcast Xfinity on Monday announced a new modem-router, called the xFi Advanced Gateway, which supports Wi-Fi 6E, the latest generation of Wi-Fi that can take advantage of the 6GHz spectrum band.