mmm Sunglasses, here's my recommendation:Check out Rudy Project sunglasses!
http://www.rudyprojectusa.comI would highly suggest the Graal series, they look great for just being around town.They are awesome sunglasses. It's nice because they have interchangable lenses as well, so depending on the conditions, you can put in different lenses to help you see betterI use Kerosenes myself, but I'm also a Mountain/Road bike racer, and I change my lenses out depending on conditions.Yellow is great for cloudy days, in snow conditions, the "racing red" lenses are great because they seem to bring out color in stuff, and there are a couple "mirror" styles as well. I know a lot of bicycle shops carry them, and if not, they can be ordered, so they aren't something you would find in a regular retail setting.Hope this helps! Rudy Projects make excellent products!