I was in the market for a helmet until a few days ago. I purchased an Icon Alliance about a year ago not knowing if I was going to like riding and to get through the motorcycle safety course. The MSF course was easier to take and pass for me as I did not have a bike at the time. Anyway, passed the course, got the endorsement and picked up my first bike (after about 30 years) - a 2003 ST. So at the end of this year I wanted to upgrade my helmet and get it custom painted. After trying on every helmet I could find I settled on the Arai Corsair V. It is a very comfortable fit for me, I could wear it all day long. The Icon was okay but wanted to get a custom paint job on a helmet that would last awhile. I wanted a helmet that was:
much lighter (the Icon is 4.1lbs)
better visibility
less prone to buffeting
removable linings
lots of airflow
minimal fogging
better fit
I met most of my criteria, though it isn't as light weight as I wanted. The Corsair fits so well and flows a LOT more air. I rode with it Monday morning before sending it off to be painted just to make sure I like it, and had to close ALL of the forward vents on top before my head froze. At least double the airflow of the Icon.
There is also a pin system for inner shields that is supposed to eliminate condensation. I'll try one of those when I get the helmet back. Anyway, loved the helmet and the ride into work. I had the windshield all the way down, and at 95mph, the buffeting was much better.
From all I read, comfortable fit is one of the highest criteria and I will agree with that, along with light weight. I wish they would have made this helmet out of carbon fiber to make it lighter yet, but it is remarkably lighter than the Icon.
Also, look up
www.webbikeworld.com for a comprehensive evaluation of helmets. One I really liked was the Akuma but could not find anyone local that had one I could try on.
Mike