Right now I'm using a basic trek helmet and it seems to just sit on the tip top of my head. I don't feel like it covers enough of my head. There is almost two inches of bare space between the tops of my ears and the helmet and most of the back of my head isn't covered. Do any of you know of any brands that have more coverage? I've tried on specialized helmets as well and they do not fit well either. Does anybody have any experience with the fox flux?