I am only 21 and I have run PDA's since I first got a cell phone when I was 17. Since then I have switched phones every 3 months or so. THus far I have found that my fav manufactorer is HTC. They make the 8325, 8525, and the new ATT Tilt. I do have some experience with the black berry although and I would say my only complaint would be no touch screen model. I now have a Trea 750 and I absolutly love it. I switch to my iPhone often when I go out, but nothing compares to the processor speed of a Treo for e-mails and the internet. Just my 2 cents