I like my dogs to be bigger. Our family has always owned large dog breeds as opposed to small ones, though my cousin does own a few Chihuahua's.
We have owned Akita's, Labradors, Alsations and Collies and they are all very nice. But Rottweilers have to be my favourite, I know they have a reputation for being dangerous and all... but they are extremely loyal, love families and are just wonderful! It's careless and irresponsible owners that take advantage or their natural guarding instincts and misuse that.