Do I always call this down?

[sweetjazz]

Against most opponents, I call this down. I almost always get shown a spade here. Against the ones who aren't very aggro on later streets (but aggro enough to raise the flop with a spade draw or bigger spade flush), should I consider folding the turn here? What about calling the turn but folding the river if he bets again?

Party Poker (6 max, 6 handed) converter

Preflop: Hero is SB with 6[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img]. UTG calls, UTG+1 calls, CO calls, <font color="#666666">Button folds</font>, Hero calls, BB checks.

Flop: 9[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
Hero bets, BB folds, UTG raises, UTG+1 folds, CO folds, Hero calls.

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