Under $400.00 I personally like Weaver over Leupold. Weaver scopes have crisp clean 1/4" MOA adjustments. My Cheaper Leupold's do not. 1/2" MOA at a 100 yards or more adjustments. I'm not banging on Leupold's I like the glass I like the durability I just don't like having to sight one in, but once it's there it stays there. Even the Weaver Kaspa scope in the $100.00 plus range is a solid scope. Have never had a Nikon scope so they might be good.