Nexus one is a good phone to have but I would not use it for ATT as the phone would not use 3G it will be limited to it's EDGE. I will wait for some time such that Nexus one will support ATT 3G 850MHz band. Currently, it only supports T-Mobile's 3G network , which is so much limited within US. I would give Motorola Back flip a shot , only Droid phone on ATT network.Wait for March 7. and Happy shopping.