Call down or raise it up?

[jr4284]

SB loves to fire if he thinks he can take down the pot. Not a very good player, but has some tricky agressive moves.

Now, I'm pretty sure that we're ahead on this turn, but should we raise it up to knock out UTG, or call it down and gain the extra bet from SB on the river?

Full Tilt 2/4 Hold'em (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with K[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="#666666">2 folds</font>, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, SB calls.

Flop: (7 SB) 3[img]/images/graemlins/club.gif[/img], 3[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, UTG calls, SB calls.

Turn: (5 BB) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero ????