By Mario_C: No best helmet (as there is nothing best). But what would be a 'best buy', for a let's say ZZR600?
What difference does it make what motorcycle it is?
Get with the program man, it's all about the image
I say again, it has nothing to do with the bike you ride and has everything to do with comfort. Weight, style, venting and above all fit.
Words aren't children and there's nothing wrong with killing them to clarify a point or keep the peace.