I just orderd a HANS and I need a new helmet becuase my current one is too small (painfull by the end of a 30min race). I have been thinking about getting a Force Air type helmet and I am leaning towards an Impact Super Charger. I was going to rig up a cooler and piping and use the stock blower motor already in the car (since the rules require it, I may as well put it to use). That will help keep the cost of a cool helmet system in check.

I would like to hear from those who have used a cool helmet system, and if it is worth it or not. It seems like a valid concept to keep my head cool wich will help concentration especially here in Floridas summer months.

Does anyone have experience with a side draft type helmet and a top draft like the Impact? Pros, cons?

Also, what benifits do the fancy Iridium helmet shields provide over a standard smoke shield?

I am just looking for some general info before I buy. Thanks for the help.