I was in the same position as you, Dave - I had heard strong opinions in both directions, but had no first hand knowledge. I'm a BIG fan of Winchester's 1897, and I was curious about Norinco's copy (because they're still being produced and because they're soooo cheap).
One of the local shops had one in stock, so I took advantage of the opportunity to go see for myself. What I found was not impressive. Norinco's copy is so flimsy, I can barely describe my disappointment. Don't even mention fit and finish. They looked like they were thrown together by chimpanzees, when compared to the real thing. The wood that was used I wouldn't use in my fireplace and the stain looked more like paint.
Having said that, though, shotguns can be as individual as people. I wouldn't be completely surprised if some of them are worth what you pay for them. If someone was into cowboy action shooting, planning to pump thousands of rounds through one, and didn't have any expectation that it'll be around 20 years from now, maybe it would be the right tool for the job.
I've been shooting shotguns for about 40 years now and I hope to be able to continue for at least 30 more. For my money, I'd rather buy a proven make/model that I know will have the same value or better when I get to the point where I'm selling it. Still, Norincos haven't been around all that long. They might surprise me and last a lot longer than I'd expect. After all, they are a shotgun. It's not like they're made of paper or anything. They're just not of comparable quality to the original.
SS