Cf is definitely quieter. As your stated, it's also much lighter, although to me the weight of a barrel is a gimmick. It's not like the extra few ounces will make a noticeable difference. I have heard that using barrel swabs can cause burs and to only use rubber squeegees, but I don't know how true that is. As for self cleaning, I've never come across a barrel better than my Furious. I've only had one carbon barrel, it was a 10" Deadlywind when I first got my first Phenom. As we all know now, and I found out the hard way, Phenoms and Freak style barrels don't play well with each other.