1. Bell, Simpson, Sparco (not saying other companies aren't good, just that for auto this would be what I'd choose from)
2. Try before you buy, buy what fits porperly
3. Full face
4. Not being a jerk herre, I read your original post. I'm just reinforcing what you already know.Don't skimp; it's your brain, literaly, your buying protection for.
My .02
