There will never be a real answer to the Arai vs Shoei argument, which is why we recommend spending a bit of time with a member of our clothing team. The only way to really tell is to try on both!
Arai have been a leading brand for many years and continue to hand make helmets to very high standards. Don’t let the retro shape fool you into thinking that nothing has changed since the classics such as Joey Dunlop or Mick Doohan. Arai pride themselves in the development and careful improvement of their helmets, fine tuning all parts to make them better than ever. That is where Arai makes the difference.