New Cell Phone Advice.. AT&T carrier

[Neipas02]

What's shaking fellas..

I need cell phone advice.
The phone I have right now is better suited to be a paperweight.. I can't hear the other person and they can't hear me.. thus negating the entire purpose of a cell phone..

Anyway I use ATT and yes I know they suck.. But I signed the contract and the devil has me by the juevos.. Soooo.. Anyone know of a decent one..
I'm using an NEC525 by the way.. I'm leaning toward the Motorola V600.. Any feedback would be greatly appreciated..

I need it to be compatible with a SIM card for easy changeover..
Thanks