Very nice. The full face from FNA is bomber. I have taken a few good dingers while protecting the old melon with it. The most important thing if you get one of these helmets is to really outfit it very well. Foam strips are provided which allows a custom fit. I think padding out right behind the head for a big cushion helped me prevent movement.
When you take a really nice ding you can hear the echo from the mounth piece. It sometimes can be tough to make your friends hear you in the eddy, but besides that I have no complaints.