TPTK vs TAG deepish (with poll)

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Have played about 50 hands with villain (most of them prior to this session), who seems pretty tag-ish. He presumably has a similar impression of me. No particular history, I 3-bet him a few hands ago and he folded, that's pretty much it.

I 3-bet pre-flop here about 90% of the time; this is one of the 10% of times that I didn't. I'm not really interested in a discussion about pre-flop.

I've attached a poll for the river decision to cater for those who can't be bothered to write anything, and because I'm interested in the balance of opinion.

Thanks in advance for any contribution guys.

Poker Stars - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker Hand History Converter)

<u>Hero (SB): $69.75</u>
BB: $76.00
UTG: $23.75
<u>CO: $101.30</u>
BTN: $17.25

Preflop: Hero is dealt A[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] (5 Players)
UTG calls $0.50, <font color="red">CO raises to $2.50</font>, BTN folds, Hero calls $2.25, BB folds, UTG calls $2.00

Flop: ($8) A[img]/images/graemlins/club.gif[/img] 3[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] (3 Players)
Hero checks, UTG checks, <font color="red">CO bets $4.50</font>, Hero calls $4.50, UTG folds

Turn: ($17) 6[img]/images/graemlins/club.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets $13.00</font>, Hero calls $13.00

River: ($43) 8[img]/images/graemlins/spade.gif[/img] (2 Players)
Hero checks, <font color="red">CO bets all-in for $81.30</font>, Hero ? (I've got $50 behind.)