Some very interesting information I ran across while looking at helmets... thought I'd share it with you all in case you have never seen this before.

http://www.araiamericas.com/default.aspx?pageid=92

pretty helpful info. I bought my helmet at CycleGear and luckily the guy helping me showed me the 3 or 4 different head shapes and let me try each on. One of them I couldn't even get onto my head because it was so oval. I ended up fitting the best into a Shoei RF-1000. It didn't put odd pressure on my forehead or back of the head. I didn't like that it was a graphics helmet but it has grown on me :D