
Not really answering your question :), but here goes with a sweeping generalisation, sorry if I offend anyone .... would say that in any breed of dog, a breeder who tells you that there are no health problems with either the breed or with their stock is being economical with the truth.
The breeder you want to go to will tell you which health issues are being monitored in the breed, and what they have done to ensure they are breeding healthy stock. Even if the breed is generally healthy, if any condition is not regularly monitored, it can very soon deteriorate throughout the breed.
M.