I'm sure most of you know this, but just in case you don't I thought I'd share. On long trips do you get a big red spot on your forehead from your helmet? I know I did. That's because I have an oblong shaped head. Took me forever to finally spring for a high priced helmet to solve this issue. I have worn HJC helmets forever and I have been happy with them. But Arai is the only helmet manufacturer that advertises helmets they make for different shaped heads. I ended up going full oblong with my Arai Profile. They also make an intermediate oval with the Corsair but that model also put pressure on my forehead.
So, if you get the big bad red spot, check out Arai Profile and Corsair V.
No affilitation, I swear, but I love my new Profile helmet.