I have a PPO 6x40S. It is a great scope, very very clear optics and built like a tank. I have it on my Nork M14 and am very happy with it. It trounces my Bushnells at home, has better light transmission than my Leupy Vari-X III 6-20 variable on my precision rig (Sako A2 action, Douglas air gauged barrel and MacMillian stock in 308)and is about the same for crispness. I am slowly switching over to Russian optics. My Swiss Arms rifle wears an ATN 5x33L, my Ar-15 has a Veber 8x50E and my other AR has a Veber 3-9x50. Bang for the buck you can not beat the higher end Russian optics.