Leak Check: Easy Call or Big Leak?

[Snarf]

PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (7 handed)

converter

BB (t1760)
UTG (t2645)
MP1 (t1310)
MP2 (t995)
CO (t1805)
Hero (t4715)
SB (t1770)

Preflop: Hero is Button with 9[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img].
<font color="#666666">3 folds</font>, CO calls t150, Hero calls t150, SB completes, BB checks.

Flop: (t600) 2[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets t150</font>, BB calls t150, <font color="#CC3333">CO raises to t1655</font>, <font color="#CC3333">Hero raises to t3160</font>, SB folds, BB folds.

How do you judge the FLOP play?

Read: Villian is solid.