The legacy is a little smoother. Theres a ball bearing in the cam on the LX compared to the bushing in the legacy. The limbs arent quite as parrallel on the LX either. This makes the bow jump a little bit more forward. However, it does have the new limb pockets which are pretty nice. The LX is the legacy on steroids. Theres a little more speed, but i think thats about it. THere both really nice bows, its your preference. Plus, the cam on the LX is adjustable which is a nice feature. Do what we did, put one of the high performance cams from the LX on the legacy. lol. It was actually a pretty sweet shooter. I wouldnt actually go do that though.