Yesterday's track day made me realised that I have a larger than average head (presumably to house my large brain of course) and I have no desire in the future to sit in someones car wearing head protection that makes me feel that I have my face clamped in a vice whilst Chaa does his best to tighten it up! To that end I must source one of my own. Will any helmet that fits do the job, or should I really go for something specifically designed for car use? I'm a bit lost here, and any advice would be helpful. It is only to be used occasionally so I am a little reluctant to spend large amounts of wedge, but still wish to afford myself the approprate amount of head protection. Suggestions.....?