
Make sure that both parents have been hipscored etc. as HD is a big problem in the breed. We used to have a "pet" one come to our training club, she was a fantastic example in temperament and the best moving DDB that I have ever seen, she had a hipscore of 10 which is excellent for the breed.
Good luck to your friends in finding a suitable one, I think they are a lovely breed but unfortunately not everyone breeding them is doing it for the good of the breed although there are many wonderful breeders out there. Just make sure that they do their homework and don't buy on a whim.