We use bullard firedome at Ecru. We have had great luck with these. Durable and low cost to maintain. If you looking to make money go further give these a look.
I am personal friends with the owner of Phenix. He has over 50 years in the fire service and is constantly striving to make a lighter, stronger helmet. I think you will like the Phenix line of helmets, I swear by them.