I'd steer clear of it for all the reasons Justin mentioned, but I'd recommend the EoTech over the Aimpoint. The EoTech is much faster. But the Aimpoint can probably handle more abuse. I saw one get sheared off the mount when a 5ton truck hit a bump and the rifle slammed into the weapon mount behind the seat. The Aimpoint was fine! I can't understand how the glass didn't break.
The ACOG is peerless for what it does, and until they come up with a better red dot than the EoTech, I'll stick with it. I like the Trijicon reflex better in theory, but in practice it is miles behind the EoTech save the no batteries thing.
You can pick up a good used EoTech for a few hundred. Make sure it is real. Unless you have NOD's, you don't need the more expensive ones.
Mind you I didn't like the EoTech, I thought is was overpriced junk at first, but they won me over through their qualities. Also, if you are patient and look around, you might find an Elcan. I got one of the Canadian style MG scopes in .308, awesome for an FAL, but not the most accurate scope.
The Aimpoint, the Trijicon reflex (and ACOG) and the EoTech are all SOPMOD components too, so you can rest assured you don't have junk. The differences between them are thus: the Aimpoint has a crisp bright red dot dead center. It is tough too. I'd say it is the "best all around". The EoTech is much faster, nothing like it. You can shoot running rabbits with it no problem because of the 65MOA ring. It is bright too, but the difference between it and the Aimpoint is that with the Aimpoint you still feel like you are looking through a scope. With the EoTech, it is a true heads up display. The Trijicon WAS my favorite, but I have problems with lighting. Unless you AND the target are in the same lighting, it just doesn't work so great. But it doesn't take batteries. The ACOG doesn't really have this problem though, just the reflex.
I've used all of these in service, this is from experience, and I still own a few too. My M4 sports an EoTech, the Beowulf has the Trijicon reflex (the Beo is only good to 200m max, 100m is ideal) and the Grendel wears the ACOG. I don't have an Aimpoint, but it is just because I never really was a fan of them in the army. Nothing against them though. And the FAL of course has an Elcan on it.
I'd say the best bang for the buck was that Elcan. Not a MOA scope by any means, but it is really nice. Nice glass.
The best cheap scope I've ever used was an SWFA SS 10x42 fixed power scope on a Whitefeather. Best by far, it is almost as good as some of the expensive ones and even has an NSN number! My buddy took this to Iraq and it came back in one piece. His Whitefeather isn't worth $4000 or whatever anymore though. Some complain the dots are too big, but for $300 are you really gonna complain? We had a couple of ATN's and some other cheapos we were toying with too, the ATN's fell apart pretty quick, both of them, and none were as good as the SS. When I get another ~$600 bolt rifle, I'll definitely use that scope again.
Because you are mounting it on an AK, I think you would be best served by one of the dots I mentioned. An AK isn't exactly an MOA weapon (like the FAL) so I would try to go with fast and durable.