3-bet the flop or wait till the turn?

[Vazh]

This is pretty much my default play. Am I missing bets by 3-betting the flop rather than waiting to raise the turn? HU I'm more likely to wait. UTG is a decent player, he could raise top pair or second pair here.

Absolute Poker 2/4 Hold'em (7 handed)

Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/spade.gif[/img].
UTG calls, <font color="666666">2 folds</font>, CO calls, Button calls, <font color="666666">1 fold</font>, <font color="CC3333">Hero raises</font>, UTG calls, CO calls, Button calls.

Flop: (8.50 SB) Q[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="blue">(4 players)</font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">UTG raises</font>, CO folds, Button calls, <font color="CC3333">Hero 3-bets</font>, UTG calls, Button calls.

Turn: (8.25 BB) 9[img]/images/graemlins/club.gif[/img] <font color="blue">(3 players)</font>
<font color="CC3333">Hero bets</font>, UTG folds, Button calls.

River: (10.25 BB) 6[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">Hero bets</font>, Button folds.

Final Pot: 11.25 BB
<font color="green">Main Pot: 10.25 BB, won by Hero.</font>
<font color="green">Pot 2: 1 BB, returned to Hero.</font>

Results in white below: <font color="white">
Hero shows Ad As (one pair, aces).
Outcome: Hero wins 11.25 BB. </font>