I'm currently with Verizon and am looking to upgrade my phone. I would prefer the iphone but would hate going back to AT&T because I never cared much for their call quality. At least with the iphone there's no confusion because they have one model. With the Droid they have several to choose from the Droid X, Droid 2, Droid incredible and Droid R2D2 am I leaving out any? LOL Can someone give me the differences between these models and which one would you pick?