When it comes to my head meeting the pavement at a high rate of speed i do not want 80% protection. When I plan on riding the shit out of my bike all day I do not want 80% comfort. When I look thruogh the windshield of my helmet I do not want to see 80% of it unfogged. I guess it is a matter of taste but when I ride a motorcycle I want to feel that I have the closest to 100% perfection I can get from my helmet, I want the utmost protection and comfort with the least amount of distraction and discomfort. There are enough hazards outside of my helmet for me to deal with.