Norinco is probably the best SKS for detachable mags. Best accuracy is probably the Yugo or the Russian. The Chinese stuff isn't horrible but it certainly isn't great.
If you want a great budget gun for range shooting or hunting I'd say buy a used Savage. If you want to reel off round after round get a Norinco. I don't see the point of trying to get a real accurate SKS myself because none of them compare to a Savage. I paid $230 for a 30.06 Savage in VG condition. If I do my part it can shoot sub MOA (one inch at 100 yards) groups. You can see a target I just shot from 40 yards with my Savage
here. The one shot to the right was before I made an adjustment to my scope (I had kicked it out of zero the night before). The other hole had 3 bullets go through it.
No way my SKS shoots that accurate. But it isn't terrible or anything and it will certainly throw lots of lead down range. I've had mine about 15 years. I've never had a problem with it and I've fired thousands of rounds through it. In fact you can see a video of me shooting my SKS with a detachable mag
here. Lots of folks say SKS's won't work with detachable mags. This is my proof they do. There are dozens of videos on YouTube that show they will including
this one.
An SKS is a good investment and lots of fun to shoot. Ammo is cheap enough so you can shoot it without breaking the bank and it will certainly hold off a small army of BG's if need be.