I switched from a Treo on Sprint to this Blackberry Pearl on T-Mobile and am happy with the phone and the service. The phone is *tiny* compared to the Treo and was a snap to set up. The battery life is fantastically long compared to the Treo. I went with the MyFavs plan, which has been great, allowing me to chat with my loved ones without watching the clock. Not to mention, I pay *much* less for a similar plan to the one I had on Sprint.I even got GTalk and Google maps easily setup on the Blackberry, with IMs coming into my central message box. That's perfect for me because I use GTalk to stay in touch normally, and this way I'm not tied to my computer. It also is a nice way to IM via the phone with out txt charges.Love it, love it, love it.