Guys,
I do a lot of mountain and road cycling, and started wearing Oakley sunglasses quite a few years ago after trying numerous brands. I wear the "straight jacket" model which is a face hugging fairly large model that keeps the frames totally out of view and also the Oakley optics are known to be the best in the sunglass world. Not a hint of distortion or anything. As for the lens' - I use the black iridium for 90% of my flying (for sunny or overcast days where it is still bright) and the orange lens' for darker overcast days. They dont add "color" per say but brighten everything up and really add contrast.

As an added bonus, the glasses are lightweight, very comfortable and they are 100% conformist to safety glass standards. Only drawback is the cost, but they are on par with other top of the line shades. I wouldnt think of flying without them!

Andrew Coholic