Let the hive mind of Engadget get that for you.
"I just switched to Sprint from Verizon about three months ago for the Pre. Then I went for the Hero about a week ago. Now, I miss my hardware keyboard and am thinking about switching to the Moment. I am still able to switch back to Verizon if I want and get the Droid when it arrives. Should I just trade up to the Moment when it comes out, see if I like it, and if not switch to the Droid? Or something else entirely? Help!"
My company builds some really versatile software for PocketPC {shameless plug}, but I was a PocketPC user even before I started here. I like being able to install software to do just about anything I want. I like watching videos, listening to music, IM'ing, and all the stuff that Blackberry is behind in.
I don't think Blackberry will die until people start REALLY wanting a small scale portable PC-like device. Hopefully that will be soon.