Just a comment about Bell helmets, from personal experience. First off, I love Bell helmets, and will more than likely, never wear anything else (one of them saved my life once, and I feel that I owe them some brand loyalty, not to mention that I can personally speak for the quality of the product, and its ability to do its job!). I've noticed different fitments between different styles of Bell Helmets. I have an M1 that I wear on my bike, fits great, but is a 7 1/2. The M3 that I wear for racing also fits great, but is a 7 3/4 (yeah, I know, I have a big fat head!). I actually tried on an XFM1 several years ago because I there was a great deal on one (the VAS shop at Bridgehampton was closing). Tried on 3 different sizes, and not one fit right/well.
BTW, I totally agree w/ Jake. Get a helmet that fits you properly!!!
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MARRS #25 ITB Rabbit GTI (sold) | MARRS #25 HProd Rabbit
SCCA 279608