Good spot for pot control?

[Atropos]

Not a real read on opponent, but he seemed rather passive and not very good. I bet the flop because I was very sure he was on a draw and didnt think he could bluff me off on the river. Without a read, do you like Bet Turn - Checkfold River, or Check-Call Turn, Checkfold River better? If the turn went check-check I probably would have check-called river as well.

Party Poker - No Limit Hold'em Cash Game - $1/$2 Blinds - 6 Players - (LegoPoker HH Converter)

SB: $204.55
BB: $337.00
Hero (UTG): $212.70
MP: $425.95
CO: $177.00
BTN: $566.15

Preflop: Hero is dealt Q[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] (6 Players)
<font color="red">Hero raises to $7.00</font>, MP folds, CO calls $7.00, 3 folds

Flop: ($17) 6[img]/images/graemlins/diamond.gif[/img] 3[img]/images/graemlins/club.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $15.00</font>, CO calls $15.00

Turn: ($47) A[img]/images/graemlins/diamond.gif[/img] (2 Players)
<font color="red">Hero bets $35.00</font>, CO calls $35.00

River: ($117) 4[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets all-in for $120.00</font>, Hero folds

Pot Size: $237.00