AK against big stacks

[rugz]

Interesing 5 hand stretch, I'm wondering how others may view my plays and how they may play them differently. Heres the situation, down to 35 people, top 20 make $ but only top 5 cash anything worth noting.

I'm shortstacked with T12,000 sitting UTG, ante is T200 and blinds are T800 and T1600. I push with A8s and everyone folds. Now have T16,400. I fold my BB to a raise. Post my SB, get dealt AJs, Button calls BB, not afaid of him limping with a big hand here so i push, everyone folds.

Up to T19,600 avg stack is about T28,000. One note, play has been very tight for the last 45 min with as little as a min raise stealing the blinds.

Next hand im on button and I'm dealt AK and this is where my question begins, everyone folds to the player to my right who calls the BB, again Im not afraid of AA or KK so I raise T7600.

The SB, who has about T35,000 now reraises me another T7600, BB and limper fold.

Info on reraiser is that he has been playin very tight not even stealing blinds and he showed down 2 hands in 45 min, AA and 99, both of which he came in with a min raise from EP, played with him before and hes shown to be a solid player.

I cant think of any hands that he might do this with except AA KK QQ, but does his not all in raise mean hes not so sure of his hand after all and maybe he's holding AK AQ or even AJ? Or is he just trying to thwart what he sees as another apparrent steal by me? Either way I'm sitting at T12,000 with a reraise in my face, I cant stop thinking AA so I fold. Good or bad?

Next question very next hand. Im dealt AK again, should I be so lucky.

All fold to MP2 who min raises, now about 20 hands ago this guy seemed to figure out that even min raising would steal blinds and he's done this about 5 times since, this being 6.

He has T38,000 after raising, all fold to me in CO, what are my options? 1) Push all in or 2)call T3200 and hope to hit or 3) I'm not folding.

Now Im thinking mid-small PP or just about any ace. I pushed and he called, expectedly, showed 99, I hit my K on flop but he rivered a flush with my 3rd king.

Im out.

Now would anyone have just called here hoping to hit knowing that if I go all in and he does have a low PP that he will definately call me. But if the flop has an overcard maybe he will check it to me? Interested in different points of view, thanks in advance.