I'm interested in a working breed, but I don't know which one is best for me. I'm very active and looking for a breed that is good in protection. I've been looking into and have interacted with German shepherds, Giant Schnauzers, Dutch Shepherd , Dobermans and Presa Canarios. I'm pretty knowledgeable about all of these breeds and have owned a few of them. I'm knowledgeable about the different sports, but can't decide which breed would fit best with my life style. I live in an apartment which is dog friendly of all sizes, and I'm an active person, but I'm interested in a dog that can calm down in the home. I'm big on training and able to work with stubborn breeds. I need an outside look. Which breed is best for me and it's doesn't have to be on this list.