A friend of mine got a "designer" breed about two years ago...a goldendoodle...which she got from a breeder she knew. This breeder only breeds goldendoodles and doesn't sell them as designer, just mixed breed. I don't know if she just got lucky or if this is a good mix of breeds, but Molly (her doodle) is one of the sweetest pups...and very well-behaved. There are at least two other "doodles" in our neighborhood and they all seem pretty well-mannered.
Me....I will stick with my yorkies....I just love them and their terrier personalities