i was going to go w the charles owens as they are less expensive, however, they did not fit my head @ all. so i ended up having to spend more money on the samshield. i love it, and it is worth the investment bc it properly fits my head.
Samshield helmets are good for round helmets and Charles owen are good for oval. I can only use Charles owen because my head is more oval and samshields, in my experience with myself and other riders only really correctly fit people with round heads