You know the ironic thing is, I live in a rural area and AT&T is flawless. People talk about dropped calls and I'm like "what's that". Oh and the "hold it this way" I dare someone to drop a call on my iPhone, I'll give you a dollar. No buildings, time machines, etc. to screw up the signal. The flipside, is that AT&T is my only option. Sprint, Verizon, and T-Mobile do not work AT ALL out here, as in 0 bars no signal until you drive 30 miles or so in any direction.
Interestingly enough, we had 3G out here before the nearby populated cities did, I guess AT&T knew an aircard was the best possible internet solution (back when it was unlimited), because the only other options are dial up and -shudders- Sattelite. In fact, I get 5 megs down and 1 meg up on 3G.
Nowadays I've moved into 'town', a small town that actually has Charter Cable internet. Still rural enough though to have excellent service.
I went to Chicago not too long ago though, thought I was gonna chuck that stupid phone. Couldn't have a conversation to save my life. My buddy who has an iPhone at the time (I was using my Samsung Epix) was experiencing similar problems BUT it was much better than mine.
-John