IMO AT&T has not handled their iPhone deal in away that engenders customer loyalty. They didn’t have MMS ready for the launch of the 3.0 OS and their bogus refusal to allow video streaming for the SlingBox app over 3G is an insult given my expensive “unlimited” data plan. Plus Verizon just has better basic coverage overall. There will be a mass exodus if Apple ever cuts a deal with another carrier. That said, the government has no place in this type of business decision. Kerry is just trying to glom on to hot story as usual.
Verizon will always have better coverage. They are the GTE and they had more towers than anyone.
As far as slingbox, you might consider Sprint. I pay $99 for unlimited everything.
In parts of the East Coast they are delivering abouve T1 speeds.