I did not run the flexx on my R, only on my crf. flexxs have movement up and down only while the shock n vibes have a full 360 motion, up down forward back etc. When cornering you still get that relief. When hitting whoops you really notice the forward/back motion and when you flat land, which I do a lot, it saves your wrist. While the flexxs are super nice and do improve a lot over just an anti vibe I personally feel that the shock n vibes are the the next step over the flexx. I am no racer, just a dune/trail guy with the occasional trip to a mx park. I originally went the shock n vibe route because it was cheaper than getting a second set of flex bars but after riding on these just on my local trails i rode home and took my flex bars off my crf, sold them , and now have two sets of shock n vibes. Just my opinion from a rider but I will not buy flex bars even if they were cheaper. If you watch their videos on their site they say you don't notice your shock n vibe clamps till you ride another quad/bike that doesn't have them. That is 100% true.