Hi all, I'm currently with Verizon in Columbus, OH. Actually, I live in a town called Upper Arlington, which is surrounded by Columbus. Upper Arlington is tricky for signal strength - UA does not allow cell phone towers. A coupe of years ago, when I was making the carrier decision, various trials with friends' phones led me to stick with Verizon, which has been reasonably good overall. I have had signal issues in the last couple of months, but there's a decent chance that it could be attributed to my rather quirky phone (Moto KRZR). That brings me to today. Currently, Verizon, Sprint, T-mobile, and AT&T pretty much all have the same coverage map. My house is in an area that the carriers show as the second-highest signal strength. I'm wondering whether anyone has any experience in this area with carrier coverage in general, and with AT&T specifically. AT&T has expanded their coverage here over the last couple of years, and the iPhone looks awfully tasty. If I switch to AT&T to get the iPhone, can I reasonably expect to get about the same signal, both in Upper Arlington and in Columbus in general? Thanks!