I bet out on the flop. Your hand is far too vulnerable for the opponents to take a free card and catch up. If mp3 checks, any overcard on the turn practically kills your hand and you won't be able to take much pressure at all. It would be nice to have some kind of read on MP3. If I was him sitting with high cards, I would take a free card as it seems foolish cont. betting into 3 opponents on a flop any pair/piece of the flop will look him up on.