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!"
Have you actually used one for a while? I have and I've used many many other phones and PDAs, and the iPhone is definitely the best. While it's true that some features are lacking (recording video and a profile manager, for instance) the UI and ability to add excellent apps is way, way beyond anything else out there.