TPTK AK in 3 way pot, one short stacker NL400

[Eternal]

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 9 Players - (LegoPoker HH Converter)
Villain is unknown. Never seen him before, and only 16 hands on him. Please comment on everything.

SB: $374.00
BB: $403.30
UTG: $407.70
UTG+1: $385.40
Hero (MP1): $416.00
MP2: $288.90
MP3: $634.50
CO: $440.60
BTN: $203.75

Preflop: Hero is dealt K[img]/images/graemlins/diamond.gif[/img] A[img]/images/graemlins/heart.gif[/img] (9 Players)
2 folds, <font color="red">Hero raises to $14.00</font>, MP2 folds, MP3 calls $14.00, CO calls $14.00, BTN calls $14.00, 2 folds

Flop: ($62) A[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/diamond.gif[/img] (4 Players)
<font color="red">Hero bets $42.00</font>, MP3 folds, CO calls $42.00, <font color="red">BTN raises all-in to $189.75</font>, Hero calls $147.75, <font color="red">CO raises all-in to $426.60</font>, [i]Hero ????

Save my last half buyin? or push it?

[flytrap]

I probably fold this. You've shown tons of strength, yet he's still gone all-in. You're either chopping or you're crushed.

[bottomset]

I think if you wanted to go with the hand for 100bbs you should have shoved over BTN's raise

I think you are committed now, but I'm not sure

[twoblacknines]

This really looks like a set to me. If I was CO I would push with 56 diamonds or a set. You have the king of D making other flush draws less likely. I say fold.

[Eternal]

[ QUOTE ]
I think if you wanted to go with the hand for 100bbs you should have shoved over BTN's raise

I think you are committed now, but I'm not sure

[/ QUOTE ]

That's the thing, I wanted to shove, but I didn't like the smooth call by CO. I guess I wanted to see how he reacted to my call.

[twoblacknines]

edit: I misread action on my previous post, and didn't see that you had called the BTN's all in already. I still think that you are behind but I think you have to call in case he is getting stubborn with a FD. Wouldn't be the first time I have seen that. Plus, you have a backdoor draw to the nuts. Call.