triple barrel or check fold? 200nl vs unknown

[pleyya]

Full stacks opponent unknown 5max
Hero raises utg to 7 with 9h10h, mp calls 3 folds.

Flop 278 rainbow pot 17

Hero bets 14 mp calls

Turn 3 completes rainbow pot 45
Hero bets 35 mp calls

River Q pot 115
Hero check folds ??

[tannenj]

meh, i'd probably just cf against an unknown.

with the right read, i think this is a decent spot and would sometimes throw out a bet of around $85 or $90.