don't know if this helps ya but looks like a GSM version is in the works...
Motorola DROID spotted in fine GSM form (video)
and yes i'm having the same dilemma as the OP. I have a hero on sprint and i'm not as thrilled as i thought i'd be. i have issues answering calls if i'm doing other tasks on the phone when they come in, just seems to lag sometimes.
love the idea of the qwerty/slide keyboard on the droid but a 1ghz processor on the dragon makes me think it will be able to do more and do more faster!
damn choices!