I upgraded from the DX to the S3 a couple of months ago. I had been trying to hold out for the Razr HD but couldn't. And I'm glad that I got the S3. The cell reception seems to be about the same, maybe a little less than my old DX, but I also live in a very, very rural area. The wifi is much, much stronger, though - in places in my house where I used to not be able to get a wifi signal I can now get a medium strength signal. For my use, the batter is a little better than it was when I first got my DX (usually lasts all day, with some to spare, and then I charge it over-night). But considering the performance difference I'm totally cool with the battery not being some mega battery. And the camera on the S3 is amazing. The speed of the phone is awesome - I've never had it lag at all. I highly recommend the S3.