I have a KBC Force RR. Really like the look and venting. Also is very stable in the wind. Had an HJC AC-10 and liked it as well but the venting wasn't as good as the KBC and my head seemed to bobble around quite a bit more at speed. Both about the same comfort wise and the KBC is the louder of the two. Also, KBC was only 170 bucks at the stealer.