When a guy ask's about an SKS, why are you trying to talk him out of it?
Bottom line, they are fun guns and being what they are, they can be more fun that a new recently manufactured American gun can be.
As far as the SKS, there are better ones than others but to tell you the truth, they all shoot about the same if they don't have a specific problem.
There are milled receivers and ones made out of bent up metal. I have one of both at the moment and they both shoot the same. If I were blind folded I wouldn't be able to tell the difference if I had gloves on.
The milled reciever guns that I have seen, like my Russian version, tend to have nicer wood and finish while the cheaper Chinese versions have crappier wood and lousey finishes, although I have seen the reverse, the former is the norm.
The ones with the Bayonents are a little more desireable but that's up to you, mine both have blade bayonets but there are also spike bayonets available. Sometimes you can buy one with bayo lug still attached and buy the parts to put one on yourself.
What specifically do you want to know besides what I have told you so far?
Did I say they were fun to shoot? Fairly cheap to shoot also.
KK
PS...The one in the above add looks to be a pretty good deal.