How Horrible is this
 

Blinds are 100/200

I'm sitting with about 27,000 chips -- 15,000 average.

Dealt A [img]/images/graemlins/heart.gif[/img]k [img]/images/graemlins/heart.gif[/img] CO.

A couple of limpers, then an all in bet for about 19,000. I've played against the all-in player before. Generally, s/he is moderate-tight and very aggressive. Bluffs rarely.

I decided to fold, but immediately second guessed it -- my analysis was that I was probably a coin flip here considering the player, and that this wasn't the time to flip coins.

Any thoughts?

Re: How Horrible is this
 

You're probably against a pocket pair - good fold. (Not worth the risk in this situation.) The chances of you being ahead aren't very high, and it is possible that the aggressive player is pushing with AA or KK and hoping to be called by QQ JJ TT or 2 broadways because his raise most likely represents a mid/high pocket pair. When I'm playing really aggressive, it isn't that uncommon to get called holding AA or KK when making an open push lol.