Z1R. Less than $100, but won Motorcyclist's "Blowing the Lid Off"
comparison of a couple years ago.
Transmitted the least amount of G forces to the head of any helmet,
including Arai & Shoei.
Also I would never wear anything but a full face helmet.
This is why. Icon Agressor. Flipped over 8 times. Saved my face.

Steelheart- '03 Speedmaster Black/Yellow The Hayabusa Killa 16" Shorties/140 mains/Airbox drilled Procom CDI "There is no cure for Celibacy. But we can treat the symptoms."