Aaaaahhhh. The joys of puppyhood! Murph was a nightmare--I had holes in all of my clothes, too. Just from taking him outside to potty. Absolutely everything was a tug. He had no off switch.
Raff is a dream puppy. He's a rockstar at the club but he's very easy to handle at home. He has plenty of drive, but he redirects pretty easily. He does get bitey when he's tired, he'll go for your leg. But, that just means it's time for the crate.
For all of his drive and energy, Murph washed right out of IPO. So, go figure.