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!"
Its so sad that these companies mark up the price so much. My ex girlfriends family owns Tourneau here in NYC and in other states/countries and they were willing to fully ice out some of my previous phones for around $1,000 when I was quoted over $5,000 at some other places.
I think its a cool idea. Working in the field for the time I did, I spent no money on every phone, so it might have been worth it. I like the way the E71 looks in that pic above.