Silkies! I plan to get a few other breeds (orpington, americuana, marans, and maybe barred rock) but right now all we have are silkies. They are great with my toddler.
The others keep trying to elbow in and failing. My 'dottes are just so much like picky old ladies in fancy dresses that I can't resist them, and they're consistent layers, too.
They always make me think of this clip (about the 30 second point if you're not already familiar enough with the movie to know what I mean right off