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!"
I think detachable earpiece ought to be a feature of every cellphone. That way maybe people wouldn't feel the need to always be walking around like Star Trek toolbags. They could, you know, stow the thing when they weren't waiting for AN URGENT CALL FROM THE PRESIDENT THAT COULD COME AT ANY MINUTE.
We all know that would not stop the blue douche users from keeping it in their ear at all times. That is if they haven't already had it surgically (or low tech, super glue) attached to their ear.