The best reason to get glasses from Eye Encounters is the price--2 pairs for $79! When I bought my first pairs two years ago, I was amazed by the price and am still amazed by how well they have held up. I went back today to get two new pairs of glasses, and received some very helpful guidance and advice from the saleswomen (be sure to ask whether they have frames in different colors). I've sent a few friends to this store as well, and everyone has had a pleasant experience.
Pros: great price, helpful service