I did a test of both phones around different parts of Omaha, Nebraska and I attached a PDF with my results. While Verizon numbers were lower almost every time it was able to stream audio a 56kbps stream on both, AT&T did drop out occasionally while Verizon's streams didn't. Both struggled to keep the TWIT video stream up but the AT&T phone was able to load the stream faster and buffered less than Verizon phone. Webpages started to load faster on the Verizon iPhone but finished faster on the AT&T iPhone almost every time. At certain points the AT&T phone finished loading pages almost 5-10 seconds before the Verizon phone. I still think I am going to switch from AT&T to Verizon permanently. Their overall 3G coverage is better, plus they allow for both Unlimited data and the ability to use the hotspot. Which I will never be able to do with AT&T.