My LS2 Rapid 11 full face is so darned noisey it spoils the riding experience visor closed it's bad open it's terrible so have been thinking of getting another helmet and scanning the web came across a make that had slipped my mind completely the Premier Brand which if I recall correctly was worn by Phil Read but seeing as how I have never actually handled a Premier helmet am looking for any comment from those who have. Plezier
If you really want a quiet helmet, Shoei and Schuberth are really the industry leads. The HJC RPHA-91 Carbon and Scorpion EXO-R1 EVO Carbon helmets also performed well in noise isolation testing. Modular helmets, like the HJC RPHA-91, are considered very quiet. I have a Bell modular, and it's pretty quiet. But I also wear earplugs (when I'm not hiding behind my Trophy windscreen).
Matching the helmet to your head shape helps get a good close fit too - some suit round heads better, some suit oval heads, and some long oval heads! Schubert I think are usually best for round heads, my LS2 is best for oval heads as are Shoei. So I've read anyway.