For what its worth,here's my two 'penneth, I've had a C3 for 2 1/2 years and have ridden about 5500 miles with it,an absolutley superb helmet, very comfortable,reasonably quiet and has never leaked.Unfortunatley the visor needs replacing and the sun visor operating mechinism has got a bit tired and is now difficult to use,which I think, considering its age etc, is excellent service. I replaced it with another C3 yesterday.I did, out of interest look at a Shoei flip front for comparison,I think that the Schuberth is streets ahead in quality,fit, and, of course, has the sun visor, which I now consider essential.