Re: NF or Leupold for the money which one
Well, if money isn't a concern, I'd say Nightforce all the way.
You may consider the Leupold's FFC reticle to be a plus, and many do; but I'm am one of the minority that prefers SFP reticles. My opinion, for what its worth, is that the Nightforce is built better than the Leupold. Has better tracking and the eye relief is constant.
If the Nightforce is in your price range, you might want to consider an IOR if FFP is a must for you. I've only had my hands on a few IORs, but they did seem nice. I wouldn't give up my Nightforce for one though; but that is just personal preference.