I have a "made for export" Norinco, I forget the year. It seems really tight and very well made. The bore is crisp and clear, but I haven't really shot it for accuracy yet. My favorites are Yugos, but mine both came with barrels that look like sewer pipes. Hoping to replace with a nicer barrel at some point.
Beware of the bore condition on any Yugo. Take a Bore Snake and a small flashlight with you when you do the deal so you can check.
Finally, don't be a sucker. There are no "unfired" SKSs. If it looks new, it probably has new or refurbished parts. Either way, it doesn't increase or decrease the value unless that's actually important to you.
Gator