I have two Norincos, an SKS I bought NIB around 1990, and a 9mm Tokarev that I got used just a few months ago.
The Tokarev has given me no problems at all and has better sights than I would have expected.
The SKS has absurdly good trigger and accuracy - much better than my Russian version. It has put a lot of meat in the pot for me.
I might hesitate to buy a Norinco because I didn't like it or it seemed defective, but I certainly wouldn't hesitate to buy it just because it had "Norinco" stamped on it.