3/6 turn decision, fire again or take the free card?

[PantherZ]

The villian is 25/4/1.75 after 50 hands. On the turn, I'm not sure whether to check behind and take the free card, or go forward with the semi-bluff. I seem to be struggling with these decisions lately.

Party Poker 3.00/6.00 Hold'em <font color="#0000FF">(5 handed)</font> link

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

Flop: (4.33 SB) 9[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets</font>, BB calls.

Turn: (3.17 BB) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, Hero ???