We use Verizon,
and we both have the LG VX8300 model phone
We like it, but none of these phones work when we're both in Walmart

its funny, when we're both in walmart,
when I call her, she can't hear me (but I can hear her)
when she calls me, I can't hear her (but she can hear me)
(wait I'm confused now! LOL. ... ... ok)
weird eh??
its like, not interference related, but, more like, the signal coming into the phone isn't strong enough, er something, to penetrate inside walmart. if that makes sense. LOL I dunno I'm confused now all that thinking above there. Oww my head hurts now!

hehe, anyway, our contract isn't up until December of next year, so we're kinda stuck with 'em for now, but next year, we were thinking about trying Cingular, since walmart is a carrier for Cingular now, least we think they are?. The Cingular website doesn't show our area as being available, or on the AT&T network at all, but I think walmart is a carrier of them if I remember right. well, thats why we have verizon cuz we didn't know if Cingular was in this area or not for sure.
unless Centennial shares the same network as Cingular, which I'm sure they don't, then probably not though. I know when kurlylox's daughter was out here with her Cingular phone, she only got 1 bar, which was why we went to verizon in the end for our last contract.