I would say shih-tzus. Incredibly loving dogs. They love giving cuddles and being cuddled back, and are SOOO CUTE!
Love to play too. Very lovable. Our shih-tzu's in bliss all the time. He never bites, ever, he's very playful. He rarely barks but "talks" to us occasionally, through little squeaks and grumbles.
They're gentle, loyal, and do respond well to consistent training. Love people and are good with other pets too. As long as you have a backyard and a comfy place to sleep they'll be happy.
Their hair can be kept at medium length, long (show-dog length) but most people just keep it in a puppy cut (see below pics.)
And of course here are a few shots of my boy, Jeffry- (sorry if the pics are huge... D:)