i was thinking out getting a docsis 3.0 surf board a few months ago, should have went with my gut feeling on that and got it, the stock comcast modem is crap. i found a spot near the original ISP box where i can put a modem. ill have to drill a few holes and fish down a wall and get a sh*t load of cat6.
guess i should say the rest of my networking equipment, from the modem i hook up an airport extreme base station, and i have a vonage VOIP box connected to that and i have around 10 wireless devices that connect to the airport extreme, 2 computers connected through ethernet. at one time there are usually 4-5 devices using the internet, one is usually an xbox/neflix box. the whole setup is really stable with the airport extreme, everything else had issues with vonage.