Flop set but turn brings flush

[Irishman07]

Villain is 45/30/3 over only 30 or so hands. He doesn't seem terrible over the small sample. Mainly looking for feedback on river. I think I have to bet here, but not sure if it should be b/c or b/f. I only have to be good 21% of the time but not sure if he shows up with worse that much.

Full Tilt Poker No-Limit Hold'em, $2 BB (6 handed) Hand History converter Courtesy of PokerZion.com

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Button ($264.15)</font>
SB ($198)
BB ($190)
<font color="#C00000">Hero ($197.40)</font>
MP ($323.95)
CO ($119.75)

Preflop: Hero is UTG with 9[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img].
<font color="#CC3333">Hero raises to $7</font>, <font color="#666666">2 folds</font>, Button calls $7, <font color="#666666">2 folds</font>.

Flop: ($17) 9[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $12</font>, Button calls $12.

Turn: ($41) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $28</font>, Button calls $28.

River: ($97) 4[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $68</font>, <font color="#CC3333">Button raises to $170</font>, Hero...

[sorcer]

b/c. I think you beat enough to make a call in this situation.

[Mossberg]

well it seems unlikely he has 2pair or a worse set. This river is very unlikely to have improved him, and it's not a scare card at all, so I think it is very unlikely that he is making this somewhat small raise as a bluff.

I don't like folding sets but I srsly doubt that you're ahead often enough here.

[boomshakalaka]

What hands are we getting value out of on the river?

is anything wrong with a c/c?

[spivey]

c/c is worse than b/f because we want value from jacks or even something he doesn't want to fold, like A9. c/c keeps us from getting value from a lot of the random crap a 45/30 will have, and let him bet what beats us (and a couple of slow played sets, which I doubt this guy does often at all based on his stats, that we beat).

[boomshakalaka]

fair enough, then how about tweaking the bet sizing, if we are trying to get value from a wide range like you said, we should lower our vb to ~30, when we are heavily raised we can fold just the same, and its gonna get paid way more. Youre nearly potsize vb'ing, not really good in this situation.