This play really depends on what stack sizes they had, then I could determine how serious they were about the flop. But I think with such a dangerous flop and a good hand, I would have bet 750 oop to help me get a better idea of where the players are who play after me, hoping to get fold equity and just take down the pot there. If they re-raised or pushed, I would fold. Since you checked and saw villian re-raise, I think you made a solid fold. That is my opinion. Sinc eyou said he is aggressive and I am assuming tight.