I've had my Rogers Treo 650P for just over a week (got it last Tuesday) and must say I absolutely love it. I had to install some extra software (VolumeCare... will definitely buy it once the trial period is up) so I could hear people easier but I love the ability to extend the "phone" with whatever I want. Text messaging on the QWERTY keyboard is awesome and the calendar is great.
Tron: there are links out there describing how to do a Hard reset (reset and erase all data) - I think there are instructions on Palm's website. I'll see if I can find a link.
EDIT: Here we go:
http://kb.palmone.com/SRVS/CGI-BIN/W...1,Case=obj(887)