Even though it's been less than 3 years since I bought my last helmet (a Shoie RF1000), I bought a new one today, the Shoie Qwest. I absolutely love it! The RF100 was comfortable, but in my opinion, noisy. For the longest time, I blamed the windscreen. I bought a Madstad and a Givi screen and fiddled with the position for a year. I could get minimal buffeting, but it was never quiet, even with earplugs. I did fiddle with the adjustment screws on the helmet face shield, too, and even t ried one of those Quiet Riders that covers the neck opening, but it was still noisy.
I went to my local accessory shop, which was having a sale, with the intention of buying the RF1100. But when I told the salesman that I was looking for a quiet helmet and I rode a V-Strom, he steered me to the Qwest, which is designed for an upright seating position. It is also advertised a a very quiet helmet. Sold! When I rode home, I couldn't believe the difference! With earplugs in, there is no noise below 70 mph. So I did so more riding at freeway speeds to check it out. Unbelievable! I am extremely happy with this helmet. All it needs is some graphics - I bought a plain silver one.
If the Shoie fits your head shape and you are looking for a new helmet, you might want to check it out. Here is a link to it on Amazon: Amazon.com: Shoei Qwest Solid Motorcycle Helmet - Light Silver Large: Automotive