Shape of Scott helmets.

I am thinking of buying a Scott helmet via the web, but I don't know what 'shape' they are and therefore whether it will suit me. My head shape suits Giro, Bell and Uvex helmets, that I do know. I cannot get a comfy fit in Orbea and Catlike. Are there any helmet experts out there who may be able to give me some advice?
Riding a Dahon Jetstream P9 folder, a Decathlon Fitness 3 flat-barred road bike, a Claud Butler Cape Wrath MTB, a TW 'Bents recumbent trike, a Moulton-based tandem, and a Scott CR1 Comp road bike.
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Alternatively, you could consult an itinerant phrenologist who visits a lot of cycle shops.