I've bought AGV's for the last 10 years (3 lids) and love em. They just fit me better than an Arai. I really wanted an Arai RX7 when I was a yoof. After 4 months of courier work I though I deserved one, so headed of to the Ally Pally show with a wad of cash. Having tried it on, it just didn't feel right. I tried an AGV and never looked back.
Arai are probobly the best in the world, but if they don't fit.....they don't fit.