First of all, the example:
Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (10 handed)
converter
UTG+1 (t875)
UTG+2 (t770)
MP1 (t795)
MP2 (t830)
MP3 (t670)
CO (t945)
Hero (t760)
SB (t785)
BB (t800)
UTG (t770)
Preflop: Hero is Button with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img].
<font color="#666666">
2 folds</font>, UTG+2 calls t15, <font color="#666666">
1 fold</font>, MP2 calls t15, <font color="#666666">
1 fold</font>, CO calls t15, <font color="#CC3333">Hero raises to t90</font>, <font color="#666666">
2 folds</font>, UTG+2 folds, MP2 calls t75, CO calls t75.
Flop: (t310) J[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
MP2 checks, CO checks, <font color="#CC3333">Hero bets t310</font>, <font color="#CC3333">MP2 raises to t740 (All-In)</font>, CO folds, Hero ...
In my experience the CO could have anything from an OESD to trips. No matter what I decide here, I'm almost never very happy about my decision.
In your experience, is this a call or a fold, assuming you don't have any reads?
Edit: Yeah, I know I should have raised more PF.