I was looking at these myself but chickened out. Not keen on the plastic clip instead of D ring and years ago had a fullface helmet split in 1/2 right down the middle of the chin piece so a bit nervous on that, I haven't heard from anyone how the flip fronts have performed in a crash. Plus their $600 here in Kiwiland. However that said I will probably lean towards one next time, it must be so much less hassle with my glasses.