The way to judge a scope is to look thru it for brightness and clarity. A good scope will make a shaded image seen by the naked eye look brighter and clearer. When you get to the better quality scopes it becomes sort of a matter of brand loyality as they all perform (some may look better as you peer thru them than others but we all have differnt eyes so go with what looks best to you). Though I haven't used a Nikon they do make good optics so I guess they also would perform, but I would still test them. The biggest problem with scopes on handguns is the handling of recoil. Cheap scopes can change zero from resulting recoil. Brand names don't have that problem. Maybe someone else can give personal comments on Nikon scopes, but whatever model you do go with be sure to tighten the rings and bases down tight. Then remove the screws one at a time applying a thread locker to each one and retighten before going to the next screw.