I have a Shoei Qwest and had a huge issue with the booming noise coming from the bottom/rear of the lid. Here's what I did and didn't do to cure it: Did: 1) ditched the little sport windshield. I found it was dumping a real blast of air right at the shoulders. 2) made sure the high collar on my Olympia jacket was closed well. Open, it funnels the air into a nice under-helmet vortex. 3) smaller cheek-pads. yes, smaller. Didn't: 4) earplugs. I can't get the foam ones to work properly, so i used the silicone ones. What I found is that they amplify internal noise - for example, chewing. With the original cheek pads squeezing so tightly, a lot of noise seems to have been transferred to the cheek bones or jaw. From there, it's the occlusion effect that magnified that sound against the earplugs. 4) fit. I'm a medium on their size chart and bought a large because I'm also an idiot. However, with the better-fitting cheek pads and by keeping the collar up and velcro'd shut, the booming wind noise is tolerable for the kind of riding I do (short suburban stuff, mostly). Will Do: I have a Windjammer II skirt coming in the mail, so if it arrives before the cold weather sets in, I'll give it a go.