What kind of speeds do you see on average? LTE on VzW is still in planning where I live. I will admit that I haven't kept up on CDMA tech as of late. Been working on a pet project that had put my reviewing of GSM phones on hold along with mourning my broken iPhone 4s (static when recording video).
It's funny when I think about it. I have a very fast Android (dare I say Samsung

) but prefer using my iPhone on T-Mobile which is still on EDGE until Tmo shifts the 3G service to support 1900Mhz needed for the iPhone. It's starting on the east coast with some lucky folks but I may be waiting a while. Otherwise, EDGE is just fine for MMS and Siri on the Tmo network.