no value in betting here?

[Rev. Good Will]

Paradise Poker 0.50/1 Hold'em (10 handed) FTR converter on zerodivide.cx

Preflop: Hero is BB with 4[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/club.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, UTG+2 calls, <font color="#666666">4 folds</font>, Button calls, SB completes, Hero checks.

UTG is a SSHE-eque TAG
UTG+2 after ~70 hands has a VPIP of 100 (not a typo)
Button is loose, but can be aggressive and knows how to through in a bluff here and there.
SB is a pretty big fish, very Loose/passive

Flop: (5 SB) 3[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], 4[img]/images/graemlins/spade.gif[/img] <font color="blue">(5 players)</font>
SB checks, <font color="red">Hero bets</font>, UTG folds, UTG+2 calls, Button calls, SB folds.

Turn: (4 BB) 9[img]/images/graemlins/club.gif[/img] <font color="blue">(3 players)</font>
<font color="red">Hero bets...</font>

I don't think I am behind here, but on such a scare card on a crappy board, am I better off C/C'ing here?

eddited because the auto-color for this converter blows