I've been using Oakleys for years in the mountains and love them. The black iridium lens (the darkest ones) are plenty dark enough for extended periods in snow, even at altitude. I tried using glacier glasses for a bit, but sport wraps are soooo much more comfortable to wear - and you don't look like a big doofus. Julbos are great, but for some reason don't fit my face. Smiths have one lens thats dark enough, but it's of the mirrored blue variety. My $.02 cents at least.