I've noticed Zeal photochromatic goggles are going for great prices at Sierra Trading Post, SAC, by the way.
I have both the Zeal PPXs and some Smith I/Os. I definitely prefer the Zeals, overall; but I do like the Smiths for days when I know it will be sunny all day or cloudy all day ... if it's going to be a mix (as most days are), I use my Zeals.
Bought my first pair of Zeals (non-photochromatic) when I came back into skiing regularly, 12 or 13 years ago. Definitely my favorite goggle. I have tried Oakleys and Smiths, but the Zeals have always fogged less (if at all), and they are most comfortable (for my face at least) and provide the best field of view.