Fold to the turn 3 bet?

[trumpman84]

5 handed $2/$4. No real reads...but villain has been playing pretty well from what I could tell.

I'm on button with A [img]/images/graemlins/heart.gif[/img]J [img]/images/graemlins/diamond.gif[/img]. Folds to me I raise. SB 3-bets. BB folds. I call.

Flop is 6 [img]/images/graemlins/diamond.gif[/img]6 [img]/images/graemlins/heart.gif[/img]4 [img]/images/graemlins/club.gif[/img].
SB bets..I decide to take one off and call...unsure of this, but if SB is on a resteal, this is a good flop for me plus I have two overcards.

Turn is the A [img]/images/graemlins/diamond.gif[/img]
SB bets. I raise. SB 3-bets. Seems I'm likely against AK/AQ/AA now, do I fold to the 3-bet or call down?