and I own the "X-Stream" model.
The thing totally rules if you ask me. I was pointed to it by Atom and I must say it's pretty much the best out there if you are looking for a full face helmet.
I am sure that others are fine, but I have tested this completely now and feel that the visability is completely uninhibited, the fit is totally customizable, and it's not very heavy at all.
It works so well, that I wear it every time I run IV+ or higher. I thought when I first got it that I would only use it for serious gnar until that one run without it on a minor V and I got bonked in the chin pretty hard.