Stars $3 Multi - AK in a questionable spot

[nincomepoop]

About 35 hands into a $3 MTT on Stars. No substantial reads on opponent, c-bet every flop (3 of them) and hasn't showndown yet. How do you proceed with AK here OOP? More importantly, what's your play on the turn and why?

Poker Stars
No Limit Holdem Tournament
Blinds: t25/t50
9 players
Converter

Stack sizes:
UTG: t3365
UTG+1: t1600
MP1: t1450
MP2: t2355
MP3: t810
CO: t2594
Button: t990
SB: t1185
Hero: t4101

Pre-flop: (9 players) Hero is BB with A[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/diamond.gif[/img]
5 folds, <font color="#cc3333">CO raises to t150</font>, 2 folds, <font color="#cc3333">Hero raises to t425</font>, CO calls t225.

Flop: 2[img]/images/graemlins/diamond.gif[/img] 9[img]/images/graemlins/spade.gif[/img] 7[img]/images/graemlins/club.gif[/img] (t875, 2 players)
<font color="#cc3333">Hero bets t550</font>, CO calls t550.

Turn: 4[img]/images/graemlins/diamond.gif[/img] (t1975, 2 players)
Hero checks, <font color="#cc3333">CO bets t500</font>, Hero ?

[QandA201]

I check fold puke the turn, but I'm a scardy cat.
Mostly I'm scared of the size of his bet... If he were stealing, I'd think he'd bet a little more, as it is, betting just 1/4 pot, I think it looks like he wants a call...
In any case, I fold.

[Emon96]

This is a 3 dollar (i have a LOT of expirirence at these) so you have to put him on A 10o+, or any pocket pair below JJ as he probably pushes with JJ+. Most times i just push pre-flop with AK as I have a LOT of fold equity in this hand pre-flop as i not only have a coin flip when he doesn't have KK or AA but I can threaten his tournament life.

Post flop I like the c-bet but i think you have to assume he hit this flop or started with a pair when he calls as the board is not that draw heavy ( would he really call there with J 10?? Maybe). I think the 4 on the turn makes folding pretty easy to any show of strength even though 6 to 1 (is my math right?) is pretty good to see a river. This early in the tourny with chips though is a good place to be and would definately make me lean toward a fold.