nl 100: river, check or valuebet?

[youcanhaveitall]

Villian is a 1-tabling and seems pretty straightforward.
Do you bet the river, and if yes how much (and how do you react to a reraise?)

Full Tilt Poker - No Limit Hold'em Cash Game - $0.50/$1 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $43.55
BB: $100.80
UTG: $238.85
MP: $22.90
CO: $121.65
<font color="black">Hero (BTN): $172.55</font>

<font color="black">Preflop:</font> Hero is dealt A[img]/images/graemlins/spade.gif[/img] J[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG calls $1.00, MP folds, CO calls $1.00, <font color="red">Hero raises to $5.50</font>, 2 folds, UTG calls $4.50, CO folds

<font color="black">Flop:</font> ($13.50) 7[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $7.00</font>, UTG calls $7.00

<font color="black">Turn:</font> ($27.50) A[img]/images/graemlins/diamond.gif[/img] (2 Players)
UTG checks, <font color="red">Hero bets $16.00</font>, UTG calls $16.00

<font color="black">River:</font> ($59.50) 2[img]/images/graemlins/heart.gif[/img] (2 Players)
UTG checks, Hero ????

Regards, Youcan

[BustoPro]

Need a read to bet here. Would he limp/call UTG preflop then call three bets with a worse Ace? That's the only hand you are getting value from, and a river c/r would be ugly. So default is check behind.