| I've got an Arai, a Roof and 4 Suomys!!! - The Suomy is just a much better fit for me and is a cert for racing as I can see out when tucked in!!! - the Arai sits too low on my head and vision is restricted.
IIRC - you either have a head shape that suits Arai / Suomy or one that suits AGV / Shoei - different constructions etc...
The answer is to try as many as poss and buy the best that fits you and that you can afford.
Tim | 
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