I now have three Simmons 4x ProDiamonds and have yet to find fault with them. I think they are all you need out to 150 yards and have come to really appreciate their compact size and simplicity. One ison the Omega X7, one on the 45 GM LRH Renegade barrel, and one on the .54 GM Renegade barrel. I've shot some pretty brutal loads out of the little X7 and the scope's adjustments are holding up fine.