Amazon offers the Arris Surfboard DOCSIS 3.1 Cable Modem for $169.99. Clip the $20 off coupon on the product page to cut that to $149.99. (You'll see this price at final checkout.) With free shipping, that's $9 under our Black Friday week mention, an all-time best, and the lowest price we could find now by $20. It features 32 download channels, eight upload channels, and two Gigabit Ethernet ports.

Note: It's approved for use with Comcast Xfinity and Cox Cable and pending approval from Spectrum. It's not compatible with Verizon, AT&T, or CenturyLink or with bundled voice services.