I've voted, but want to mention MM2 as well although I know the survey came out before MM2 was released!
I play them usually more than one time and in the case of MM2, I played it in normal (more than once) and then hard mode. Sometimes we miss things in a first playing and it's fun to complete all secret rooms, all the quests (yah.. I'm still looking for #39 in MM2) and items scattered about. One certainly gets their money's worth
. Actually I ended up playing older (ie Blades of Heaven) games waiting for MM2.