Hmmm, this could depend upon your price range for a scope as you can spend a few hundred to several thousands for one. I have first used a Nightforce 8-32x56 along with a 12-42x56, and switched over to a Leopold 40x. Also, it depends upon what kind of shooting you wish to do, Myself, I like being able to adjust the power when needed and then there are times I want to get up close and personal with the target, but this is only a personal preference. I have heard some say the 56mm Nightforce looks to big sitting on top of an AR15 which I say is not the case..............