Serengeti, the best damn sunglass company in the world. Seriously, ask an optometrist.
We think alike - I have a pair of Serengeti Visa shades in gunmetal (from their 'Drivers' line) - discontinued a few years ago - and they're the best dang sunglasses I ever had. $135 new, but I found mine on eBay for less than $40. Score!
I'd love a pair of Predator 8... (Men In Black).