AQs -- huge pot, what is the right line on the turn?

[cflynn]

This pot was so big pre-flop that I lost my mind. UTG+2 was like a 40 vpip with about 15% PFR. Comments on all streets appreciated.

Party Poker 2/4 Hold'em (10 handed) converter

Preflop: Hero is MP1 with Q[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img]. UTG+2 posts a blind of $2.
<font color="#666666">2 folds</font>, UTG+2 (poster) checks, <font color="#CC3333">Hero raises</font>, MP2 calls, MP3 calls, <font color="#666666">2 folds</font>, SB calls, BB calls, <font color="#CC3333">UTG+2 3-bets</font>, <font color="#CC3333">Hero caps</font>, MP2 calls, MP3 calls, SB calls, BB calls, UTG+2 calls.

Flop: (24 SB) K[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">SB bets</font>, BB calls, <font color="#CC3333">UTG+2 raises</font>, <font color="#CC3333">Hero 3-bets</font>, MP2 calls, MP3 folds, SB calls, BB folds, <font color="#CC3333">UTG+2 caps</font>, Hero calls, MP2 calls, SB calls.

3 bet here hoping to fold some people out, try for the old free card on the turn.

Turn: (20.50 BB) 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, UTG+2 checks, Hero checks, <font color="#CC3333">MP2 bets</font>, SB calls, UTG+2 calls, <font color="#CC3333">Hero raises</font>?????

Should I raise here for value (is my math wrong?) or just call?