I'll chime in here briefly, not to kick a dead horse in the azz for the hundredth time but....
With the Potter era boats you always know what you have, where it is, and or where it's supposed to be. Consistency was for the most part constant. After that its basically anyone guess depending who built it.
Yes, there countless knock-off's. Some good, most bad. But IMOP anything after '80 their all knock-off's, but that's just me.
Hey if you want a great knock-off check out the new Silverhawks. I'd buy one in a heartbeat if I had the money.
Cheers.