Jake,
based on your test fits, what do you recommend for the more than 2 less than 4 weekend per year budget aware racer?
thanks.
Well, honestly, I think it's a big ole mess, and very difficult to decipher the actual performance.
Considerations:
Your car. Lets face it, a 50MPH hit into tire barriers in a sedan based car with a full cage and sheet metal is a lot different than an Indy car into the wall at Texas. Doubtful many of us NEED super head on performance. So deciphering the numbers might not be THE most important aspect.
Your seat. Any lateral protection? Some H&NRs do a better job here. If your seat isn't a halo style then maybe that model with better offset performance will help you keep the seat you have. (less $ spent in the end)
Budget: these things aren't cheap. Nor are the upgrades (new seat) to make them work as well as the Issac, if you used that previously.
Comfort. The R3 fit me fine but I guess my shoulder blades fit it well. Others wanted the seat pad. They Hybrid seemed way too cumbersome. The HANS kinda annoyed my shoulders and I hate the thing hanging on me as I get out. But thats a real personal call.
Principals/Ethics: SFI and HANS clearly wrote the spec that has resulted in, to be blunt, a bunch of crappy solutions. If the makers of the HANS were really interested in
real safety, they'd have written a spec that had design freedom in it as opposed to language designed to protect HANS and help them write patent infringement lawsuits. They were quite bright about that. SFI of course is guilty too, but we are in a box on that aspect. So, from a principal POV, some may avoid the HANS.
To answer your question, based on the info you've given, I'd search for a used HANS. Or i'd find a friend in another class that races and borrow his. It's not like a helmet where you sweat it up, and the sizing aspect is simpler. Heck buy him beers, or throw him a $20 for rent. If you payed $20/race, you'd have spent $180 after three seasons of your assumed schedule. In three years, maybe the landscape for H&NR will have changed.
I hope........