It's mean to make me pick. My Moser is definitely the fastest. My upright is definitely the cushiest (and it's still plenty fast, just not aero).
I'll have to go with the moustache bar bike - my '74 International. No one is lukewarm on these bars - everybody loves them or hates them and the people who hate them don't understand why the people who love them do (we set them up correctly and grab them in the right places)