I think I've finally decided to go with the Samsung Moment. The screen is smaller, but it's AMOLED vs the Droid's LCD, and 800 Mhz CPU vs (IIRC) 550 Mhz. I also found the QWERTY keyboard far superior to the Droid's (outside of a slightly strange spacebar...). That one is subjective though, Droid's keyboard seems to be a love it or hate it kind of thing.
Unfortunately right now the Moment is running Android 1.6 vs the Droid's 2.1, but Sprint announced an upgrade to 2.1, probably happening in May. Oh, and the feature that really sold me... a lanyard loop.
So, anybody have experience with the Moment?