I'm one of the minority ones on here, not that I disagree with most of the 'can't go wrong with surplus/commie-steel' advice.
But I put all my eggs into the Bulgarian 'Waffle' ((10)) basket.
Now the only real detractor to them, is the price. Right now I can find them for just under $40, but they normally run for about $45 per mag. Not cheap.
IMHO they are the best though, it is the best of 'both worlds' so to speak. Steel reinforced where you need it, but lightweight polymer everywhere else. Makes for a durable mag that isn't too heavy, also I find them very, VERY comfortable.
My current stock: 10 x 30 rounders, and 2 x 40 rounders... If I were you, I would think about investing in at least a few.
Oh and, here is the cheapest I've found them: http://ak-builder.com/index.php?dispatch=products.view&product_id=30291
and, now just went out of stock. Literally yesterday they had some... Next best:
http://circle10ak.com/AKMagazines.shtml
or if you haven't drank the haterade yet:
http://www.cheaperthandirt.com/product/7-M47W
^cheapest
Yes I try to 'avoid' CTD as well... But money... I like to spend less of it