i just made the change myself and in the evaluation process. the quantum leap for me is giving up the trackwheel and back button on the side. seems to have slightly better graphics and its easier to read. other than that its just a new gadget so far. with google maps who needs GPS? still dont have functionality there. battery life seems adequate. it is not as industrial strength as any of the earlier models. good news is i dont think it will have the dust problem behind the screen.