I have Cingular Nation. And I had issues with signal strenth. I NEVER picked up a Cingular signal, but ran off of TMobile all week. Granted w/ Cingular Nation I dont pay Roaming or Long Distance, so if Roaming is charged, you'd eat those minutes QUICK. My signal was horrible, Only like 1 or 2 bars at most. When I talked to BF at night on the cell I had to stay in one spot in the hotel room and NEVER move.
I have heard other carriers work much better. It all depends who you have. Call your carrier and talk to them about the coverage they have in that area.
Good luck.