I tried the Oakleys, and wasn't blown away by them, especially given the mind-blowing price. The 'superior optics' don't mean squat if you're sweating hard enough to fog them (which I did routinely despite the fancy anti-fog coating they claim is on there) as everything will lose resolution.

I've been through a lot of sunglasses, but I'm pretty happy using 2 sets:
1) Very dark polarized lenses - for bright noonlike summer riding. I use Natives but anything will work provided they're dark.
2) Tifosi Fototec Red glasses - For everything else, especially dawn/dusk. These photochromatic lenses do not darken enough to be comfortable on a bright sunny day, but they will excel in all other conditions, including fairly dark ones. I nearly exclusively use these during winter months.

Unfortunately, haven't found a solution that encompasses all , but these 2 suffice - and they're not as insanely expensive as Oakelys so if they get lost/chipped/broken, they're easily replaceable.