I'd have to say the AK would be your best route. I tend to avoid modifying a weapon to do something it was not originally intended to do (SKS with detachable mags). Using an SKS with stripper clips is not a bad option either though.
Yeah, true enough, some of those WASR's are junk...but many are not. If you are on a budget, and cant spend 2k+ on a Krebs or other high-end manufacturer, or don't want to modify a Saiga, WASR's are a fine route. Just go to a reputable dealer, and inspect the weapon before you buy it. Many shops have a supply of surplus mags you can fit into the well to check for wobble. A good shop owner won't care if you thuroughly inspect the weapon right there in the shop. They know that if you are satisfied, you will be back for more.