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!"
Well, time to sell my VK2000.
I don't get it though, the specs say that the VK2200 is 8.8 mm thick, which would put it in the same league as VK2000/VK2020 size-wise... Yet they don't comment on it in the article. Something's up.