Don’t get an AKC Shepard. They have been bred for a look and have serious hip and health issues due to the sever slop of the back. If you want a real dog that is healthy get one from working dog lines from Europe. I have one with Yugoslavian breed lines and he was less than $700 with no hip issues. However be aware these are high energy/ high prey drive dogs that needs a lot of interaction.
I think your right. The GSD with the slopped back does not look strong in the hips. The Belgian is a much better looking dog. We have a black Sheppard mix who weighs 40 lbs and is beautiful and healthy. A rescue. That is a cheaper option and the mixes seem healthier.