I've heard good things about papillons and the ones I met are more interested in their owners than in strangers. I like that kind of devotion. Most terrier breeds are yappy. Long haired miniature dachshunds are very sweet and not barky and hyper like their bigger cousins. Maltese are very lovely.

I'm partial to Cavalier King Charles Spaniels because their spirit is more akin to a laid back and confident larger dog. But...they are partial to, I think, heart defects.