I'm curious as to what the benefits are between Cingular, Sprint and eventually AT&T. I've used Sprint for the past year. Overall, I've been happy with the service and coverage. I pay $45 for 500 minutes and $10 for unlimited data. The unlimited data comes in handy as I use email ALL DAY. Is there an advantage to the SIM card. I guess you can always resell your Treo...and pull your SIM card.

Your thoughts and comments are appreciated.

-Chris