Another datapoint - I love my Arris VOIP gateway, MODEM, firewall, GbE switch and WIFI 802.11AC dual band router. My main reason for the all-in-one is because I only have one device to setup and administer as opposed to getting 3 or 4 separate devices to play nice with each other, been there and didn't enjoy the 'experience'.... It also doesn't take up much space when compared to separate devices (and associated wall-wart power supplies). It's connected to a Dell 16-port managed GbE switch that is wired to all rooms in the house (and 3 other dumb GbE switches) and the overall combo is superb. It also helps that it has been one of the most reliable devicesI have ever had, it just never crashes.