Comcast Bidding To Buy AT&T's Cable-Modem Unit

jobugeek writes: "Comcast is making a bid to buy AT&T's cable modem unit for over 44 billion. That would combine the #1 and #3 cable modem providers in the U.S." If this deal should really happen, it would create the country's largest broadband provider. I wonder which of these two has better technical support, installation speed, etc.