I was wondering the same thing as the OP, but I have Altell's HTC Touch. My current phone is AMAZING!
I did like the Touch Pro (a little), but I'm thinking that I don't really know all that it can do. I've done a little bit of research on it, but I haven't seen anything that really stood out to me.
I'll stick around this thread too just to see if I hear anything amazing about the Touch Pro.