Maybe this is just standard...

[Heimdal]

...but I usually check behind on a turn like this. Villain is unknown. After 30 hands he has played tight. On another table we just played a hand where he maybe thinks I bluffed against him - it looked like a bluff.

On turn I have 6/8 outs to the nuts. I just hate getting checkraised here and my standard play is to check. So bet or check?

PokerStars No-Limit Hold'em, $10 BB (9 handed) converter

Hero ($1104.75)
Button ($287)
SB ($489.25)
BB ($1394.50)
UTG ($354)
UTG+1 ($1402.70)
MP1 ($618.60)
MP2 ($1026.70)
MP3 ($750)

Preflop: Hero is CO with 9[img]/images/graemlins/spade.gif[/img], T[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">3 folds</font>, MP2 calls $10, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $50</font>, <font color="#666666">3 folds</font>, MP2 calls $40.

Flop: ($115) Q[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
MP2 checks, <font color="#CC3333">Hero bets $80</font>, MP2 calls $80.

Turn: ($275) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
MP2 checks, <font color="#CC3333">Hero bets $180</font>