iPhone - nice device; too many features I would never use, however. I'd like to see a simpler version of it; maybe with just the music player, PDA functions, and phone.
So far I've had no problems with Cingular aside from the occasional deadspot that every carrier suffers from. Since I switched to them from Verizon, I have found service to be better wherever I go-Portland-metro, Eugene, Southern Oregon, etc.