100NL...semi deep...did I miss a value bet on the river?

[ssnyc]

Villan is a good multitabling regular who has been opening a lot of pots for 4X...I played back at him a few hands back from the button with junk and he called and folded to my c bet...I usually reraise this but I didnt want to play a big pot out of position...How is my line here? After he called the flop CR I figured he had a legit hand and AA, KK and QQ all fit his range...still...I think the river has to be bet...how much???

Poker Stars
No Limit Holdem Ring game
Blinds: $0.50/$1
8 players

UTG: $97.25
UTG+1: $69.45
MP1: $101.35
MP2: $248.95
CO: $78.45
Button: $29.10
Hero: $185.55
BB: $40.80

Pre-flop: (8 players) Hero is SB with A[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/spade.gif[/img]
3 folds
MP2 raises to $4
2 folds
Hero calls
BB folds

Flop: ($9) K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/club.gif[/img] (2 players)
Hero checks
MP2 bets $6
Hero raises to $14
MP2 calls

Turn: ($37) Q[img]/images/graemlins/diamond.gif[/img] (2 players)
Hero bets $20
MP2 calls

River: ($77) 7[img]/images/graemlins/spade.gif[/img] (2 players)
Hero checks
MP2 checks

Final pot: $77