I do think Buster is my number 1 and probably always will be. We communicate so easily, I can send him though a different gate with a quite "hey Buzz, we're using the top gate today" and he gets it. He's like a person with his personality, he "gets" things the other dogs never will. He's just not like the other dogs. We know each other back to front, I can read him so easily and him to me. We're just so bonded.
Quinn is my second favourite, she's everything I want in a dog. She's athletic, intelligent, highly trainable and wants to learn. Very active and demanding but really really sweet. I've only known her for a few months though and we've still got a lot of a relationship to build.
Mac and I arn't very close, I just don't have much of a connection with her, she's very sweet and I do love her but we just don't click at all.