I love shelties but you said it, they’re serious. Rough collies on the other hand are clowns. Those two look alike but don’t act alike.
Beauty is in the eye of the beholder, but for me the rough collie is the most beautiful dog alive. Especially a male blue merle, in full winter plumage—wow!
I’ve never had one, and didn’t know about the clownishness. The extent of my rough collie knowledge would probably be, “Is Timmy in the well, Lassie?”
;)