I have a sprint phone now and it gets horrible service, so I was thinking about switching to cingular, and getting the Treo 600, but the mb limit is scaring me. People on this board are talking about they use like 100mb in half a month. With sprint you get unlimited, but with cingular they want to charge out the wazzoooo for that kind of usage. What should I do? Is using 40mb a month a lot or would 10mb be enough.