Depends on the reason you are using a PDA. If you are a Palm user and like that OS, then the Treo 700p is the way to go. If you are all about your e-mail, the BB is definately IT. BB servers "push" your e-mail to your device. I use the 7130 and it's great. Perfect for managing your e-mail.

7130e. A lot of people think that just because it's a blackberry it only does email, but there are applications out there for the Blackberry that do wonders. Plus, as mentioned in the other reply post, the way the blackberry handles email is just great!