I have used two different pairs of Rudy Projects- one is a Rydon and the other had a shield that clipped on to the glasses (which had clear prescription lenses). I don;t use either now, because I have three sets of Oakleys and I don't need more glasses (plus prescription lenses are ridiculously expensive). So like I had mentioned earlier I think- the one that had the clip-op shield, was simply too front-heavy. So I used to use the clear base glasses for MTB night riding. The Rydon became my favorite. It has a rose/brown tint which was good for most conditions, though not great for bright sun like we have much of in Colorado. I'd never get a clip-on type again. The Rydon is very nice though...decent view and grippy. The bridge also sits higher. Then again, so do all my Oakleys and any good cycling-specific frame should sit high and provide good view while riding. I splurged on the Oakleys with a dark grey, grey-clear transitions, and VR28. If I wasn't such a chicken, I'd do Lasik and have 5-6 sets of different lenses.