Don't want to open a can of worms, but interested in the opinions of those who have experience with different helmets. Most of my rides are mini-, or not so mini-, adventure tours. In other words, many miles of freeway/highway (100 to several hundred), followed by gravel roads, followed by 4x4 track and sometimes trails. I have been using a street helmet, currently an HJC AC-12, and am happy with it (fits my head, not too noisy, well vented, etc.). But I'd like something more open for slow speed riding. Because I have to do a fair bit of highway before I get off pavement, I'm pretty sure I don't want an MX helmet and goggles--and carrying two helmets seems excessive. I've been looking at helmets like the Arai XD (MX shape with visor but also face shield, so no goggles to mess with), $350-ish USD; and considering modular helmets like the HJC AC Sy-max (not sure about safety in a crash with the flip-up mechanism), $200-ish USD. Any experience with these lids, or ones like them? Thanks in advance.