Well, it all depends on what you want to do with your phone. The SLVR is totally wrong for data/e-mail.
I have the 8125 and love it. It's got WiFi which is so awesome since I get free internet.
After that it's a matter of taste/features. Do you have a system with POP support? The Blackberry might be a good idea for you. Do you like installing lots of software?
Sorry to cloud your thoughts but here's an article about some new tricks cell phones can do with a few suggestions:
Right now ive narrowed it down to
Motorola SLVR L7-$50
Cingular 8125 Pocket PC-$250
Palm Treo 650-$200
And by the way i am going to Cingular.Your help is appreciated