Top Set but whole table staying with me

[Roadstar]

Reads - SB is an LPP as rated by PT w/ low post flop aggression. Same with BB (sLPP - calling station symbol by PT).

I think I played all streets correctly up till the river. With the 6 [img]/images/graemlins/spade.gif[/img], it completes a high and low straight as well as the flush. My thought was that one of them must be chasing for something and is likely trying to C/R me at the river. Thats why I checked behind.

Is this still a value bet at the river? or check is ok?

Thanks!

Party Poker 1/2 Hold'em (9 max, 9 handed) converter

Preflop: Hero is Button with J[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, MP1 calls, <font color="#666666">1 fold</font>, MP3 calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, SB calls, BB calls, MP1 calls, MP3 calls.

Flop: (10 SB) 4[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(5 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">BB raises</font>, MP1 calls, MP3 folds, <font color="#CC3333">Hero 3-bets</font>, SB calls, BB calls, MP1 calls.

Turn: (11 BB) 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP1 checks, <font color="#CC3333">Hero bets</font>, SB calls, BB calls, MP1 calls.

River: (15 BB) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP1 checks, Hero checks.

Final Pot: 15 BB