QQ with A-T-T flop

[Vee Quiva]

15-30 blinds. 10 players left. Hero has 915 chips. SB has 1060. Hero has the button.

Hero has QQ. Folded to the button and hero raises to 120. SB calls and BB folds. Heads up to flop 270 in pot.

Flop is A [img]/images/graemlins/spade.gif[/img]T [img]/images/graemlins/heart.gif[/img]T [img]/images/graemlins/diamond.gif[/img]

SB checks and Hero makes continuation bet of 120. SB calls

Pot is 510 to turn. 3 [img]/images/graemlins/club.gif[/img]

SB checks.

What's the best move here and why?