I call this a "sort of" comparison, because the 2 helmets are quite dissimilar. However, I had my hands on both and thought it an interesting comparison between a $160 helmet and a $500 ish helmet. The 1Tonne modular helmet is my own, and I have been using it for about 2 years. The Shoei Raid is a friend who was unable to use it, so I thought I would test it out and see if I needed to upgrade. So.. my impressions were these: 1Tonne: - service is good. - helmet ...