Hello everyone, I am looking for expert opinions or input here. I am thinking about buying an AK sometime in the future and when I finally decide to crack the old wallet open I'd like to make a wise choice on what I am purchasing. I am hoping that someone who has shot all of the variants caliber wise not necessarily brand but the 7.62x39, 5.45x39, and 5.56 variants. I am little more interested in knowing about the 5.45x39 or the 5.56 variants as I know the least about them. To get to the point I am looking for pros and cons on those two and would also like to know about magazine reliability/availability of the 5.56 and if you would, do a verses 7.62x39 variant. As a side question does anyone know of any American brand 5.45x39 ammo other than Hornady? I like the concept of 7.62x39 the most currently but am looking to being convinced in buying one of the other two for accuracy, availability, and weight purposes and also cost efficiency if there are brass 5.45x39's out there.