I've had a Shoei X-11 for 1.5 years, which is the next model up from the RF1000. But I found it pretty loud, and I wanted to try out a quieter helmet. Cycle Gear has a policy that you can buy a helmet and try it for a week and still return it. CG said that the X-11 is pretty much the loudest helmet on the market, and the RF1000 is the quietest. So I had the RF1000 for one week. I found it fit well, and had the same level of quality/fit/finish as the X-11 (which is very high). It was also much much quieter, as it has a lot less venting than the X-11. I found that even on a coolish winter day, my head was getting warm, so it migh get really warm in the summer. I also found it fogged a easier than the X-11, but it was easily crack the visor to fix that. Despite possible hotness in summer, I'd rather have less noise. If I were buying a new helmet, I'd buy the RF1000.