AK flops top 2...what to do on river?

[Gary Stevenson]

Full Tilt Poker - $1/$2 - No Limit Hold'em (9 handed)
Seat 1: Villain ($244.15)
Seat 7: Hero ($268.70)
Dealt to Hero [Ks Ad]
2 folds
Hero raises to $8
2 folds
Villain calls $8
3 folds
*** FLOP *** [Kc Ah 8c] Pot ($19)
Hero bets $15
Villain calls $15
*** TURN *** [Kc Ah 8c] [7s] Pot ($49)
Hero bets $40
Villain calls $40
*** RIVER *** [Kc Ah 8c 7s] [6s] Pot ($129
Hero bets $205.70, and is all in
Villain folds
Uncalled bet of $205.70 returned to Hero
Hero mucks
Hero wins the pot ($126)

No specific reads on villain here...been sitting for maybe 50 hands, they haven't gotten too involved in anything. However when they called the flop and turn they were almost instantaneous...So i figured they were being stubborn with any ace(although probably Q,J,10 since they've been fairly tight) or they were on a flush draw. So given the river blanked...do you like betting pot here? overbetting to induce a "big call" from opponent? underbetting? checking to induce bluff/value bet? (although i was confident they would check behind most of the time here) they had $180 left on river

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