Overall I am impressed with the initial feel of the helmet and the sizing seems to fit my oval shaped head pretty well. The venting is adequate but not exceptional. The vision is decent as well with a nice eye port and good shield clarity. Overall this is a good helmet for the money.....with one caveat. It is very loud. I won this helmet at a track day sposored by my local dealer and they gave it away as a door prize. I would never have bought this helmet as I usually buy Shoei or Arai. Compared to those two brands the Scorpion is very loud but that is my only real complaint. I would be willing to try Scorpions higher end stuff but would never purchase the 400.