I own two modular helmets, HJC and AGV. The AGV put the chin bar too close to my chin for comfort but the helmet fits securely. The HJC chin bar feels fine but the helmet fits a little loosely. So, what's the trade off? The AGV locking mechanism works better than the HJC, but the HJC has a better visual outlook. Basically, I'm not sold on the modular thing. The only thing I do enjoy is the ability to put around 15mph or under with the lid up for air flow, but other than that I just don't get the real comfort and protection I need. You may say go buy a better (more expensive) helmet, but being a poor single father of one the budget usually won't allow for an expense of more than $200. Makes the choices rather limiting.