I've always worn a full face Shoei---right now an X11 for the past 5 years---so its time to get a new helmet.
I want to like a flip-up lid but I figure that I'd probably be tempted to ride with it in the open position from time to time in very hot weather. I also wonder what would happen if you go down on the chin bar---would it snap open?
Also, I tried a C3 on and it's a frickin' huge helmet (just it's overall diameter)!
2014 R1200GSA White