I was a HUGE BB fangirl. I had several different blackberries over the span of about 5 years and really enjoyed them, but I switched to a MyTouch running Android and I love it!!! The open source makes apps cheap and readily available. I don't like the idea of a single company deciding what I should and shouldn't have access to.

Plus, I love having a removable battery, If I'm going to be away from a way to charge my phone (however unlikely) I could always carry a spare with me!