Had one but it went back after a month! Came from a Shoei Multitec and by comparison the System was badly screwed together. Really wanted to like but just couldn't find it. Other points that bothered me were the visor didn't seal properly (there's a fix for this now), it was windy around the back of the neck, but most of all, the front top vent didn't seal properly and after half an hours riding I'd have a very cold patch on my forehead that led to headaches!
Then tried a second hand C2 but it wasn't comfortable so went back to Multitec. Another satisfied customer! The new Shoei looks very interesting!