I am a huge SKS fan because I like getting the most bang for the buck. Without doubt the SKS is the best bang for the buck. I had a SS Ruger Mini-14 which I loved and try to get back all the time from my friend whom I sold it too.
It was 100% reliable like all Minis I have seen and it was plenty accurate.
Box stock, I got 1 1/2" - 2" groups at 100 yards with a scope. That was with Wolf ammo as well. That is all the accuracy I need and felt it was almost as good as most of my AR-15s which if I do my part can get 1 1/2" groups at the same distance. I think either the reports of the Mini-14 being not accurate are over blown or I got a good one. My friend also has a blued Mini-14 that shot well too so I think they can be expected to do 2" at 100 yards without much problem. I may be totaly wrong about this however since I have only shot two of them.
The SKS I have found generally are pretty accurate if given a scope. Try to shoot them a 100 yards with the lousy open sights they come with will result in dissapointment unless you are really good with iron sights. I have mounted scopes on some of my SKSs and been impressed with the accuracy. I have never shot them at 100 yards on paper but I have shot them at 50 and less than 2" groups with no effort. All my SKS shooting is done with cheap Russian Wolf or similar ammo BTW.
Here is how I compare the SKS to the Mini-14:
Reliabilty, equal. I have never had a jam in with either that wasn't cause by an after market mag. I consider these two rifles to be the most reliable semi-autos the world has ever seen. The AK is below these two because I have seen plenty of AKs jam despite their rep as being un-jammable. Don't believe everything you read or hear.
Accuracy, slight edge goes to the Mini-14.
Capacity, Mini-14 all the way. With detachable box mags, it can shoot 30rd mags be design. The SKS is a 10rd gun, you can fix detachable mags to it but they may not be reliable and they are not as easy to attach and remove as the Mini mags.
Weight and size, the Mini is smaller and lighter so the edge goes there.
Quality, equal. SKSs are quality guns despite their low price. Made every bit as good as Mini-14 or many other guns costing several times more.
Sights, Mini. Peep are better than open,
Trigger, Mini.
Safety, Mini. The SKS safety is actually dangerous because to flip it to fire, you have to hook your finger on the safety and pull back. In doing this movement, you are putting your finger in the path of the trigger.
While both guns are great choices for a rugged reliable semi-auto, I can't think of any way where the SKS is actually better than the Ruger. It is as good or slightly less than the Ruger in everyway. So if the Ruger Mini-14 ranks a 8 on a scale of 1-10, I would rate the SKS a 7 1/2. The question is, is the Ruger worth five times as much as the SKS for only giving you a little more? I don't think so and that is why I sold the Mini and bought five SKS.