My wife just bought a Verizon 4S and I have an AT&T iPhone 4. I heard AT&T overall had faster download speeds than Verizon. So, I tested it tonight by downloading the same song on her iPhone and on mine. I used the 3G network which both had full bars. The Verizon iPhone (4S) took almost 4 minutes to download. AT&T iPhone took 40 seconds. I was thinking about switching to Verizon when iPhone 5 comes out but am not so sure. Does anyone know why there is this big disparity? Any one else tested this and get similar results? I was actually shocked how slow the Verizon data download was.