I can't say enough about this goggle. I've skied with these for the past two seasons, and had nothing but good experiences with them.
-tough, and rugged lenses - I've put these through the ringer with flying through small trees and even though they will scratch, it's barely noticeable when you have them on
-very fast and easy to interchange lenses
-fit nice and comfy on my face and work perfectly with the Variant helmet also from Smith
-no fogging whatsoever EVER - the only weather that has affected these was freezing rain, which would affect every goggle lens
-stylish and functional with multiple lenses that will not only suit the conditions but get heads to turn
-on the pricey side, but worth every penny imo
-make sure you take your goggles off your helmet when in storage - the strap will stretch out quite a bit if you do not
The best goggle I've owned by far. Can't really imagine a better goggle.