Jake, your bias is showing. Some of us chose the head protection seat not because we realized our HANS was inferior ... we just chose it because it's obviously safer than a non-head-protection seat. Frankly at the time that I bought that seat in 2006 I'd never even heard of an Isaac and had never seen any side-impact H&R restraint numbers. I bought a HANS in back in 2004 because I knew it was safer than the horse collar I had been using and everyone else had one. Actually I'm not sure how anyone would have known that Isaac existed in 2004, or even 2008, without reading this forum or rr-ax. I still have never actually seen one in person.

But yes, you're right, I personally didn't consider the egress issue associated with that seat until I mounted it in the car.