Maybe this decision is easier than i think. Villain is 45/16/2.6 over over 100 hands. I haven't seen him bluff yet, although i've been in a lot of pots with him in the last 20 hands and i think i took all of them down without showdown.

Full Tilt No-Limit Hold'em, $4 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($156.10)
BB ($346)
Hero ($433.40)
MP ($201.40)
CO ($403.80)
Button ($225.30)

Preflop: Hero is UTG with A, Q.
Hero raises to $14, 1 fold, CO calls $14, 3 folds.

Flop: ($34) K, 5, Q (2 players)
Hero checks, CO checks.

Turn: ($34) 7 (2 players)
Hero bets $24, CO calls $24.

River: ($82) 6 (2 players)
Hero checks, CO bets $82, Hero