As most of you have read I do not like my Leupold VX-I. It's been sent in to Leupold twice. Now I've also been told I was in the minority but I don't like it and it also seems to lose zero super easy if you bump it or it falls over or anything. I put a Burris Fullfield II on that was cheaper and looks much much clearer and works better. Heck my $30 has honestly worked better and lasted longer.

I know I'm in the minority so maybe you will get a good one but because of that I'd go with the Nikon out of those two choices. I'd check out the Burris Fullfield II though. I really like it so far. I haven't had it that long though so can't comment on how it will hold up over time.