I just bought a set of the new Limb Savers Ultra on ebay at a good price. I wasn't sure what to expect from them but have been hearing some good things about them. The ones I have are the split limb variety for my Hoyt Xtec. I placed them where the factory location of my originals were and shot for a while. I could right away notice a big difference. I couldn't beleive it! The only noticable difference between these and the old ones is the shape, but they made a difference. The Xtec has extremely low recoil and vibration levels, but honestly, there is much less than that now. Sims has done it again!