Great advice, definately try and find a store you can try them on. I went to alot of stores, but couldn't find any SA helmets, so I tried what was available. I decided to order Beiffe Predator from Summit, lucky it was really good fit. I would have rather bought it from a store near me though.

Also definately go with the SA helmet, that way no matter what you decide to run in, or where, you'll be covered.