I own a Saiga 12 and have never had any feeding problems. And if you do get one with feeding problems it cost less then a $100 to fix. This is me in this video when my Saiga 12 was bone stock. 45 rounds not 1 problem.
And the prices have come back down on the Saiga's you can get one now just over $600.
http://www.youtube.com/watch?v=FzIpjYRSH-s