I've never found a shephard to be anyhing but what you want it to be, they follow very well
play when you want to play, sit when you want to sit
they follow the leader to make he responsible decisions, and as long as you act as such. they will follow you until the end of the world
they are generally smart and require a good mental exercise daily, a good physical exercise daily, and the rest is follow the leader
worked great when i was a kid, and now im the boss and still does.
i did 2 years ago get a black lab and your right, energy energy energy.. happily knocks kids over to get that mystical ball you've just thrown