I Don't Like Aces on the Turn

Are we betting here or should we check trying to either lose the least or induce a bluff on the river. Of course, there is the chance that I give him the miracle free card he needs if we are still ahead.

Party Poker 1/2 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is MP3 with K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">3 folds</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">4 folds</font>, UTG+1 calls.

Flop: (5.50 SB) J[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, <font color="#CC3333">Hero bets</font>, UTG+1 calls.

Turn: (3.75 BB) A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, <font color="#CC3333">Hero?

___

Edit: villain is 55/0/.35 over 142 hands but has check raised in the past.