I bought the Concept because it seemed to have everything I needed ~ the internal sun-visor is so cool. However I find the "venting" to be almost non-existant and in the rain I have to leave it open or I'm completely blind. Odd fitting too; they say the sizes run small which I would have to agree with. I've taken a spoon to the inside of the helmet to get rid of the pressure points and that has made a huge improvement. Still, for a long ride I wear my AGV.