I had two pairs of Performance "CAT-1" house brand sunglasses that I liked but both are kaputt now after 5 years of use.
I have one pair of Nashbar brand ones as my main commuter set that are okay for the price, and also a pair of Tifosis for nicer weather riding and another pair of new Performance brand glasses which I have a clear lens on for dark riding. For early AM riding I also have a set of cheapo yellow glasses.
I just recently got two very different Oakleys for a total of $100. Never really owned any shades this nice before. I'll see if they really make a difference.