The friendliest GSDs I ever met were 2 Schutzhund trained dogs from Germany at Wynn Strickland's house.  A well bred GSD is capable of being a great working dog and family pet.  They are well rounded.  If trained they can do anything.   But you can find different personalities in the same litter.   My GSD was a family pet, obedience trained, a protector that loved small children and small animals.   She had a high prey drive and extremely loyal and affectionate while always being kind to weaker.  I took her to a nursing home where she greeted invalid, bed ridden and Alzheimer's patients and made them smile.   I took her to school where she adored the kids.   I showed her where she got a blue ribbon one day but another she ran around all sassy.  When someone came to my house unannounced she growled viciously at the door, same as my car but when they were invited inside she greeted them.  She carefully opened her Christmas presents then played with them.   She would play hide and seek with my son and pull the covers down in the morning to wake him.  She was athletic,  smart, affectionate and beautiful.   

My breeder was Wynn Strickland of Wynthea Kennels.  

Kirschental is a top German Kennel and they are all working dogs.  Uran Vom Wildsteigerland dog's grand sire.  

https://wildsteiger-land.de/?page_id=248

She sounds like a good all around family dog. I worked with a trainer for several years on scentwork and tracking, and a few other things, like BH although we never trialed. He said my male was too friendly and wanted me to allow less of that.  No greeting strangers, no meeting temporary visitors in our home.  He said a true protective dog isn’t social to everyone. It’s breed standard to have some human aggression and to be aloof.

I don’t know that breeder.

My dog was also a Uran progeny.  He was very prolific.

Not familiar with them.

Karl fuller has passed and his kennel is gone. His U litter pops up in many pedigrees of working lines and showlines. It’s also found in Cion’s pedigree.

There is an interesting statement. Not one I agree with. A dog is capable of being social and turning on aggression.

That's a very old kennel name. Are they still around?

I don't believe Kirschental is still breeding. I think the owner passed.