My OH had a GSD when we were first married. Bess Von Tanengrauben SCH III was a retired demonstration dog for a Police trainer and my OHs personal protection dog..Bess was a real sweetie to have around but she did take her job seriously...
Later I fostered a lost GSD,we were never were able to find her owner..I gave her basic OB training,she was a quick learner...After she was solid on the OB routine we donated her to a service dog program..She graduated with flying colours and joined a College student who needed a wheelchair and a bit of doggie help.
I have seen many GSD classes at dogshows in the US and Canada and the Canadian classes have as a rule have been much better. I have also seen some super nice GSDs in Viena and other parts of Austria...I think the Canadians are adding more imports to their breeding programs (just my opinion). I do know where I would go to buy one.