I own two Kraftwerks GSD's...a 13 month old female and an 8 month old male.
My wife had been in contact with the owner for several years before we purchased the first one and we went out to the facility to meet the pups and bring the first one home. I have had several post purchase conversations with the owner, although he can be hard to get to at times. His office staff can be hard to deal with.
They are both terrific dogs, energetic, smart, loving and very athletic. Both dogs were sired by Karlo, a magnificent dog whom we met during our visit.
Are these dogs any "better" than other GSD's? Probably not, but we are very happy with our purchases and would not hesitate to buy another if the occasion were to arise.
I would also be glad to provide more info if you would like.