This has been very interesting and informative. As a newbie newf puppy buyer especially, and as someone with no breeding experience in any breed.
I went out looking for a newf that was sound in health and temperament (I would think that's what most do). I wouldn't say I am experienced enough to say there is a split between show and working dogs, but I do see a difference in say, styles. Not sure I can convey what I mean. As I did more and more research I realized I wanted a working dog - I've never been that interested in showing in conformation - so when I saw there was VN title I started looking more into the lines of those dogs as a dog who could "do it all" appealed to me and seemed more how I see a newf to be. Anyway, as a newbie it's all just a maze anyway and I did the best I could with what I could figure out.
The discussion of genetics on breeding newfs has been interesting - and man, I give y'all credit, so complicated! Someone or some people mentioned a limited newf gene pool or something along those lines, etc and how it gets complicated - the lines going back and forth from the US to Europe etc. For years and years, I've sat for umpteen hours listening to basenji breeders go back and forth on genetics. As they are a breed that is still "indigenous" to the Congo and every 20 years or so the B Club of America allows African Stock to be introduced into the US breeding programs and tracked (in the hopes of keeping the breed healthy etc without changing the standard or introducing a genetic nightmare). You can imagine the outcrossing discussions being beaten over the head there. Breeding to a total unknown. So, I've known many people in other breeds who say off hand how they would love to have an unlimited gene pool (haven't known enough newf people to have heard it yet here) but let me tell you how utterly not-a-picnic it is for basenji breeders. It, for the most part, is a positive thing - but is also extremely complicated as all you breeders can probably imagine.
Anyway, just throwing it out there as I find the whole thing interesting and giving the responsible breeders out there a thumbs up for trying to figure it all out and do the best they can...