Get what fits your head. I have read a lot about Arai helmets, and really like some of the current ones. They just don't fit my head shape, though. I have a Shoei X1100 and X12 and they both fit my head shape really nicely. However, be warned - don't just buy a helmet off the net without trying it on first. You might end up with something that gives you a headache because it doesn't fit right. And if it doesn't fit right, it means it's not going to protect your brain properly. Which is kinda the point.