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gTen: I completely forgot about the 30day thing with Sprint. I'm partial to HTC devices (since the Mogul>>) My wife has the Epic4G, I've rooted that for her...but have NOT flashed a custom ROM on it. She doesn't like that I spend hours on end messing with my phone to begin with....so I don't have experience with Samsung flashing...
I'm torn between these 2 devices...but I'll probably be doing the try one out and return if I don't like route.