Long story cut very short, these are my favourite goggles I've ever used. They come with photochromic (transitions) lenses as standard, so the lenses adapt to suit the light conditions. I thought this would be something I noticed happening but it isn't my eyes were simply always comfortable.
I had the Chameleon Lens in mine which ranges from category 2-4. Even in it's lowest light setting it's fairly dark but still gives you plenty of contrast when it clouds over. When the sun comes out though, it gets seriously dark. I have quite sensitive eyes so I really like a high category lens and this is the best I've tried. The optics are excellent, I'm actually sat here typing this in the sun with them on at the moment because they are better than my sunnies.
If you have less sensitive eyes than me, the Cat 1-3 lenses I had in my other Julbos may suit you better as they have way better contrast/light transmission in poor light but still darken sufficiently to ski even in full light on a glacier in the summer.
The coating on the lenses seems to be of normal to high durability. I have a couple of tiny scratches on my Universes, nothing I notice , after 30 days in them. I've seen goggles scratch much easier than these but I would say that Oakley lenses seem to hold up ever so slightly better.
The foam is slightly thinner than say on an Oakley crowbar, which I like because they sit closer to my face and give better peripheral vision. Speaking of which, the field of view is excellent, comparable to any of the oversized goggles but in a slightly smaller frame. I have a fairly narrow face/small head and these fit me fine.
The optics are also the best I've come across, though I haven't tried the new Oakley Prizm range in any depth which I'd like to be able to compare them with. I would seriously recommend getting your hands on a pair of Julbos, I can't really state enough how happy I am with them.