AT&T is the fastest (This even surprised me)

[i-John]

http://gizmodo.com/5428343/our-2009-12+city-3g-data-mega-test-att-won?skyline=true&s=x

They didn't test around where I love, which is North Dallas, and the 3G is awesome here, often better than most wifi hotspots.

 

[thegoldenmackid]

https://forums.macrumors.com/threads/838255/