I'm in the market for some sunglasses, probably high end, Oakleys or Rudy Projects. The way I view it, whatever I get for cycling is a good investment in health, and even when things are overpriced I can justify it since I'm saving so much by not driving. Sunglasses can serve a dual role in non-cycling wearing too, but for that they need to look halfway decent, which is why I need to see sunglasses on faces.
For instance, just by pictures alone I would say the Rudy Project Kalyos look the best, but based on a few magazine pictures here and there, it seems like the wider, narrower type tend to look best on a face, such as the dude on the right side of that page.
Post pictures of yourself wearing your glasses!