I have been riding the S2 now for a month. Great helmet BUT....I can't get rid of the wind turbulence without riding with a gentle throat hold with my left hand. Have tried all types of neck wear. My S1 did not have this problem. I cant hear the SRC unit with the S1. I hear the Scala rider II fine with the S!. i am so disappointed in this $700 helmet. If anyone has a solution please post. I have sent pictures and talked with SchubertUSA they have no fix and just say sorry.