I used to have an Arai for 5 years and it was the best helmet I'd had. However it was a bit noisy so having read flip fronts were quieter I tried the Neotec. Hadn't planned on it, it was just the one that fitted best after spending an afternoon with a number of different makes. I also wanted a comms unit and the Sena Neotec set up is good. Have to say I have been disappointed that its not as quiet as I expected, certainly not as much as I'd been led to believe by the reviews. It was quieter than my old Arai but that was getting loose and the padding compressed, so a fair bit of noise was coming up from the bottom of the helmet. I think the ventilation in the Arai is better too. After 2 years the Neotec finish is showing more marks than the Arai after 5. I don't feel any bobbing about at speed on either bike (k12 has MRA screen, K13 is standard) but I'm only 5'9" so maybe I'm getting a little more protection from the fairing. I'm not about to change the helmet, its only 2.25 years old, but am not a convert to Shoei at the moment.