Recently I bought my first ever pair of sunglasses (I'm short-sighted and, about a year or so ago, started wearing contacts on a more regular basis). Personally, I don't trust the designer stuff (a case of style over substance, although some of the Emporio Armani's are cool) and decided to get a pair of Ray-Bans (i.e. a well established and trusted brand). Unfortunately, I found it very difficult to find what I wanted (i.e. polarized lens that completely cover the eyes) - there was always something wrong with the ones currently on the market (too tight, too loud, metal frames, large gaps between the eyes and frame, etc.). In the end I got these
but may get a second pair in the near future. I'm not into the aviator/Tom Cruise look, though, and much prefer plastic frames (so I can sweat freely and not worry about a metal frame corroding with time).