We have a healer mix, so along with being strong, she has a ton of energy. She doesn't like leashes, and pulls away when possible.
We received this harness/leash set and figured it would be in the pile with the others that we tried, but we we surprised to find that it actually seemed to keep her from pulling! We have used it a few days, and not only does she not pull, she actually seems to like it!
It is as little to soon to say, but so far we are off to a great start!