I have smooths and spend more time with smooths and can say that temperamentally they’re no different than roughs. They are certainly not more like cattle dogs or more “on”. They do, IMHO, shed in a more annoying way than roughs, like Bluey said. There are however, big differences in temperaments in different pedigree lines. While all share their “collie-ness”, they have different degrees of humor or energy or inquisitiveness or pushiness depending on their pedigrees.
I also think that collies are very easy dogs to get as adults, even if they have been show dogs exclusively. Collies are fastidious about their living space so wherever they live and eat, they don’t want to soil. House training them is pretty easy at any age.
Yes, collies can be barkers. Mine don’t really bark at all, but they are a bit of an anomaly.
Can you see the following picture? It’s from our local performance group’s collie-day get-together. Mine is the one looking offended about wearing a hat. The blue next to him’s brother just won BOB at the Collie National today.
https://scontent.xx.fbcdn.net/hphotos-xal1/t31.0-8/s2048x2048/12356895_10208055658566526_8993611322835341574_o.jpg