A high value bet

[obsidian]

I never know when to make a value bet with A high. I almost never do. Did this look like a good spot? Villain is 50/9/1.

Party Poker 20/40 Hold'em (6 handed) FTR converter on zerodivide.cx

Preflop: Hero is CO with A[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero 3-bets</font>, <font color="#666666">3 folds</font>, UTG calls.

Flop: (7.50 SB) 2[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

Turn: (4.75 BB) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>, UTG calls.

River: (6.75 BB) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets</font>