AA 10/20, simple turn/river decision

[Lurker4]

This is a 9-max table but is currently 6 handed. Villain is unknown. The average unknown is probably moderately aggro in this game. This is a pretty simple, standard situation...wondering what others do, 3-bet turn? Just calldown the c/r? Call turn c/r and raise river?

Party Poker 10/20 Hold'em (9 max, 6 handed) http://216.119.70.224/converter/hhconverter.pl

Preflop: Hero is MP with A[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/heart.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">4 folds</font>, UTG calls.

Flop: (7.50 SB) 9[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Turn: (4.75 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG raises</font>, Hero...