I never used to think that pit bulls were so great, but I recently had the opportunity to meet one "in person", and I fell in love with him. Such an affectionate and energetic little guy. Just goes to show that personality is everything.

To answer your question, I generally prefer large dogs, so:
Chihuahuas and Bulldogs-not my favorites, but I have to admit, when I see Chihuahuas on the street, I really think they're cute.
I think Great Danes are, well, great. Love their faces.