If any "breed" I would have to say hound. Any of the redbone or black and tan, ridgeback, etc. They have the best personalities. But it depends on the dog. I like each for specific reasons. Mutts mostly I have had. I have a friend who has a standard poodle that we all loved. Bostons are funny, I had a chihuahua that was the best little dog.Japanese Chins are adorable.
As the bumper sticker says. "RESCUE is my favorite breed". LOL