"Pro" Arai RX7s are exactly the same as "Shop " RX7's ,be careful Mr Arai gets very upset when his integrity is questioned
there have been cases of top racers wearing Arais with other brands stickers on,particularly at the TT in the 90's,having said all that generally the quality of helmets has improved and the fit is what really counts.......oh and racers would wear a bucket on their head if you paid them enough !!!!!...........