If you're going to buy an AK, I'd recommend getting it in the traditional 7.62x39 round. Diff between milled and stamped...stamped is just like it sounds, flat piece of metal, usually 1mm thick, stammped into shape, drilled, bent, and heat treated. Milled starts as a block of steel and is milled into shape, is heavier, usually results in a more accurate gun. There are some manufacturers making stamped receivers with 1.6mm thick walls, same wall thickness as milled. (Global Trades/Armory USA in Houston).
Anyway, my choice of "best" AK's. Teid for first place would be Krebs Customs and Arsenal Inc in Nevada. I own an Armory USA SSR-85C2 and fit and finish is great, is an awesome AK. I'd say Armory is way up there in seond place along with a couple of other builders. Mine wasn't terribly expensive either, I paid around $550 with blond furniture.