Wow, there are so many features to be love (I don't think I've ever been this excited about buying a new phone!). If forced to pick, I'd probably have to say a tie between the 4G network speeds, and the hot-spot feature. I travel for work and have used a usb 3G modem as my main internet source for a couple of years now. To think that in less than a month I'll be able to lower my overall bill, have one less thing to lug around, AND enjoy a faster internet connection. Sprint and HTC really hit this one out of the park.