It's getting time to replace the brain bin, and as I'm getting on I can't afford to lose any more synapses. How can I know if I'm getting what I'm paying for? The testing methods don't seem to have got much more sophisticated than when they were introduced about half a century ago- basically whacking helmets with sharp and blunt weights. What I want to know is: is there data out there that can grade helmets on their capacity to reduce the acceleration to the brain in real life crashes? If an $800 helmet really is better than a $300 one, I'd shell out the cash...maybe reluctantly, but I would. In an age of Mythbusters & affordable accelerometers, I can't believe we cannot get better info. Any ideas, anyone?