10/20 Blinds hand - I choke in the face of a turn donkbet

[Zele]

Raising seemed like spewing (and I really didn't want to get 3bet); folding seemed weak. As it went, I just felt dirty.

Edit: No read at all. This is the second hand we've played together.

Party Poker 10/20 Hold'em (6 max, 6 handed) FTR converter on zerodivide.cx (http://www.zerodivide.cx/converter)

Preflop: Hero is UTG with 5/images/graemlins/diamond.gif, 5/images/graemlins/heart.gif. Hero posts a blind of $10.
<font color="#666666">3 folds</font>, <font color="#CC3333">SB raises</font>, <font color="#CC3333">Hero (poster) 3-bets</font>, SB calls.

Flop: (6 SB) A/images/graemlins/spade.gif, 7/images/graemlins/diamond.gif, 8/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, SB calls.

Turn: (4 BB) 9/images/graemlins/heart.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

River: (6 BB) 3/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls.

Final Pot: 8 BB

[Danenania]

Looks fine.

[ArturiusX]

I just call preflop, the rest looks fine. I find a turn fold without the gutshot though.

[Pog0]

I feel inclined to fold here on the turn, and if we're good here, villian will often have 9,13,21 outs.

Running a 43% range for villain, our equity is at 32%, but our equity must be lower for his range of hands that donk the turn. We should assume we need to call 2 BB to win 6 at this point. Yes, we only need 25% equity to make this breakeven, but do we really have that against his range at this point? He might even give up on the river with his bluffs/semibluffs so you may end up winning less when ahead and more when behind. But he might also give you a free showdown with his 9x,8x, and 7x hands to compensate for this.

I don't know, I would habitually fold this spot, but that may be wrong, and I wouldn't know what to think of most river cards.