I love my Smith Phenom goggles!
They fit great, are really comfortable and look great. I recommend the Smith Universal Helmet Helper if you use a helmet in the slopes like I do.
Never had any fogging problems, ever!
It is super easy to change the lenses and I switch between Ignitor mirror and yellow lenses. The Ignitor mirror lense, however, is not very good for slightly cloudy days (distorts the visual acuracy somewhat, thus reduces my board experience), so I have ridden mostly with the Yellow lense unless the sky has been totally cloud-free.
I'd recommend the Smith Phenom goggles anytime!