Yeah, those guys. I know that Sadowsky black label strings are made by R. Cocco, but they sound just different: fuller with less extended highs. I've played Sadowsky black label steel and nickel during the last six months and I find that Cocco strings have a fuller and more detailed finger and pick style sound. I'm not a slapper at all, but I don't like them for slapping. YMMV.
Plus, I don't know why but they just sound better than every other string I've tried (Sads, D'addario, DR, T-I, Fender....) for chordal stuff. Others point this out as well.