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!"
Ah, they fooled me. I thought they had actually used actual images of the verizon guy, the sprint guy and catherine zeta-jones, when in fact they just grabbed three random models and put them into a costume. Still, pretty interesting that each wireless carrier has a strong enough identity that you know exactly who they are simply by their spokespeople.