I've mentioned this long ago, but I do experience drone on my 15 with my Shoie full face helmet only. It's the RF1200. Only between speeds of say 45-65 or so. Slower, nothing, faster nothing. I live with it because I love the bike and am not about to spend hundreds looking for another helmet. I try to wear my Bell Pit Boss as much as possible. It's just something with my head shape and that helmet.