Perhaps HJC helmets are not as popular within BMW community, IDK. I own a Shoei Neotec2 modular helmet and an Arai Contour-X fullface helmet, but would like another modular helmet. Considering the HJC RPHA 91 either in standard or carbon. I have read or watched all the reviews. Anybody on the forum gone down wearing one and had the helmet messed up, but their brain case and brain stayed intact?