Looks like the question is really one of price....
If you want to spend only $200, it sounds like that SKS is a good deal, if its in good condition. The cost of one of those aftermarket stocks is about $50.
If you want to spend $300 or so, you can get a SAR.
If you're willign to spend $350-$400 you can get a Milled Bulgarian AK (SLR-95, 98, SA-93, etc). And I'd recommend that as I believe its a much better product for only $50-100 more.
If you're willing to spend $500-$600, then get a VEPR-- they are excellent.
If you'd like an AK and don't really need the AK look, then get yourself a Saiga from CDNN for $160. This is really a killer deal-- for $160 you get a brand new, russian made, top quality Kalishnikov... the only downside is that its in a hunting gun configuration. So, if having a pistol grip is not critical to you, then save $150 and get yourself a brand new saiga. And if having a pistol grip IS critial to you, you can buy that new saiga and convert it to the AK form factor rather easily by putting about $150 more into it. (Or only $90 if you want to go cheaply.) You just need to replace the furniture and the fire control group, or whatever combination of parts to get the imported parts count down to 10 or less.
IOW, with a little work, you can have a brand new, Russian made "AK-47" for less than $300.