I currently have a gs3 with sprint, and it moves and works at speeds slower then a turtle. tomorrow i will be going into radioshack to inquire about a promotion they have on the gs3 with verizon. is it worth the switch? ive heard all good things about verizon, so i'm hoping switching with remedy the situation. also, radioshack seems to offer the greatest trade in amount and lowest price on a new gs3, has anyone found any other good deals?