I just bought a pair of Shaun White Jupiter LX's. This isn't my first pair of Oakley's though. I had a pair of flak's but I sold them which was a terrible decision. But anyways this is not about that. I was wondering if I was to buy replacement lenses for the Jupiter LX's which lenses would I buy because on oakley's web site there are only Squared and regular Jupiter lenses. Which ones would I buy and is there a difference? Thanks.