I have been a long time Treo user as well and now am extremely happy with the Pearl. I am a physician and for the longest time, have stuck with Palm OS handhelds/phones because I needed some medical apps/references that is Palm/PPC compatible. Now, there are a handful of medical apps for BB and the Pearl pretty much does what my Treo did (maybe except for video recording). My Treo stays on my desk (for nostalgic reasons) and the BB goes with me everywhere.