Thanks for the input, everyone. I think my main issue is probably my eyes: I wear dailies and have to take them out after 10 hours even on days where I'm just inside at work. I've tried taking the chin curtain off, but didn't like the way the helmet caught the wind when I turned my head. Unless it's pretty cool, I need the chin vent open as well. But no, Mr. Fist, you can't have my bike.