So this is interesting. I had an opportunity today to do a side-by-side 3G data speed comparison test between my AT&T iPhone 4 and a Verizon iPhone 4. Did a bunch of real-world tests, web browsing, YouTube etc - and the Verizon phone CRUSHED my phone in every instance, it wasn't even close.
Now I know this is not in any way scientific but I found the results really surprising, all I really hopes to see is the Verizon 3G hold its own against my current phone, and it totally surpassed my expectations. I now feel much better about having switched