Arai Quantum II Twister
light wieght, very plush and comfy liner, excellent fit and finish, even hanging off at the high speed kink in VIR there was minimal buffeting, excellent vents, some visor fogging, little bit of noise
Shoei Orbit
light wieght, nice and very comfy liner, excellent fit and finish, very little buffeting and only at very high speeds, excellent ventallation, quick and easy visor swap, but visor fogs up, some noise
Scorpion
fog free visor, good vents, even at low speed lots of buffeting in the wind (bobble head), very heavy, visor attachment sucks, plastic parts (vent covers, visor holders) break easily, even with a fairly plush liner still not very confy, noisy
AFX
never realy wore it, maybe twice. feels cheaply made, thin and uncomfortable liner, heavy, some buffeting, decent visor
HJC
don't really wear it either. poor fit, heavy (though not as bad as the scorion or afx), decent liner
don't remember what else, but there are more not worth mentioning.
will always buy an arai or shoei, because I'm worth it