Very popular breed at the moment. And ideal if you want a big shaggy dog type thing.
At the last count, Molly encounters 6 regularly in the park, all of which she gets on great with. I walk one of them sometimes for the owner and one of them belongs to close friends who occasionally have Molly overnight. They vary in size quite a bit though, from small collie-ish to big frickin shaggy bigger than a lab size. Each one of the six is quite different in terms of temperament, obedience, sociability,etc. which is probably more to do with the owner than the breeding. Go figure eh?
All in all, a breed that can be fantastic in the right hands, but can also be quite high maintenance should you neglect a bit of tough love when they're puppies. Not for me, but Molly seems to love them all - and not one of them has ever aggressively bullied her, despite being at least three or four times her weight.