I've never once had to discipline my GSD. Never once used physical force to make him do anything. He listens and is eager to please. Never once worried about projecting an alpha image. I just KNOW that I'm the alpha, and my dogs read me as such. I don't have to do anything special. People tell me that their goal is to have their dogs as well behaved and listening as well as mine. Then they go home and try the Cesar Milan tssk and pokes and try to make their dogs submit to them. I don't have to make my dogs submit, it doesn't occur to them to challenge my position. It's just the energy I give out.
Low stim e-collar training is a world apart from the mentality of 'shocking' your dog. Low stim is exactly as it sounds - you work at the lowest possible setting the dog can feel - sometimes so low, people can't even feel it.
With my dog, I mostly worked on engagement, on obedience training, on meeting his exercise needs.
He's a pretty good dog. Can't complain.