I wear contacts and sunglasses which allows me to collect sunglasses. I know have 3 pairs of Oakleys and a pair of Performance sunglasses with interchangeable lenses. The only problem with Rx glasses are I am afraid that I will break them and don't really want to pay to replace them. I do like the idea of transitions, but I don't think they change quick enough. I know that they change from clear to tinted quickly but they don't change from tinted to clear quick, only a problem if you ride in and out of a forest or something like that.