I have three varmint rifles that I put good scopes on. The first one has a Burris XTR-II 4-20, the second has a Vortex Viper PST Gen II 5-25, the last one is graced with a Nightforce NX8 4-32. All three are MOA and FFP. I've always had issues with the Vortex not being clear at max power and the paralax/focus not worth much past 400 yards. After shooting both the Vortex and the Nightforce side by side at 600 yards I realized that I've settled for extreme mediocrity with the Vortex. Just so you know I have a pair of Vortex Fury binos that I really like and a Vortex Viper spotting scope that made me wonder why I didn't buy one sooner, so I'm not a Vortex hater. I'm going to sell the Viper PST and put the money toward another Nightforce scope for that second rifle. That Nightforce is as clear as my spotting scope.