Bottom straight

[Meraxes]

Party Poker 0.50/1 Hold'em (9 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with 3/images/graemlins/club.gif, 3/images/graemlins/spade.gif.
UTG folds, UTG+1 calls, MP1 folds, MP2 calls, MP3 folds, CO calls, Button folds, SB completes, Hero checks.

Flop: (5 SB) 6/images/graemlins/heart.gif, 5/images/graemlins/heart.gif, 7/images/graemlins/club.gif <font color="blue">(5 players)</font>
SB checks, Hero checks, UTG+1 checks, MP2 checks, CO checks.

Turn: (2.50 BB) 4/images/graemlins/club.gif <font color="blue">(5 players)</font>
<font color="CC3333">SB bets</font>, <font color="CC3333">Hero raises</font>, UTG+1 calls, MP2 folds, CO folds, SB calls.

River: (8.50 BB) J/images/graemlins/club.gif <font color="blue">(3 players)</font>
SB checks, Hero checks, <font color="CC3333">UTG+1 bets</font>, SB calls, Hero calls.

Final Pot: 11.50 BB

I couldn't decide which was worse on the river here. Overcalling, or folding for one bet in a decent sized pot...
Any opinions?