I have a set of Bolle safety glasses courtesy of my sister the paramedic (fell out of the back of her truck I think). Really nice. I wear them in the early/dark mornings.

Recently I splashed out and got some clear>dark transitions lenses for my older Oakley Flak Jacket frames. I got the XLJ lens shape for more coverage for wind/bugs etc. Lenses are not genuine Oakley, but generic from Ebay. Work great and are useful now that summer is coming and the longer weekend rides start in the dark but get light quick (I don't need to carry a second set of sunglasses for later).