ARRIS SURFboard S34 vs NETGEAR Nighthawk CM3000 Cable Modem

Both are DOCSIS 3.1 cable modems built for multi-gig plans, and both are modem-only, so you supply the router. The S34 is the simpler pick: two Ethernet ports, a two-year limited warranty, and a compact body that is easy to tuck away. The CM3000 costs more but adds a second Gigabit port with link aggregation and a stronger record of owner satisfaction. Pick the CM3000 if you want the extra wired port and the higher-rated track record; pick the S34 if you want the longer warranty and a smaller footprint.

• Choose the ARRIS SURFboard S34 if you want a compact modem with a two-year warranty and a single high-speed port for your router.
• Choose the NETGEAR Nighthawk CM3000 if you want a third Ethernet port with link aggregation and the model with the stronger owner ratings.