Big draw on the flop... how best to pump it?

[SomethingClever]

Hero is in the CO with 9[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/heart.gif[/img]

UTG limps, MP (poster) checks, Hero calls, Button folds, SB completes, BB checks.

Flop: 5[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/heart.gif[/img]

SB checks, BB bets, UTG raises, MP calls, Hero...

Is 3betting in hopes of a free turn the best? Or should I call and pop the turn if I make my hand.