I have purchased 3 frames and changed my perscription 5 times over the course of several years. The staff is very helpful and the prices are reasonable. I have to admit, lately, their selection of frames seems limited (and coservative).
If you're going to change your lens, this is the best place to go. The material of the lens is great and doesn't compare to other places which offer the same rate (believe me, I've tried ). I've paid $60-$70 to change my lens...