Is there any difference between the two? Cabela's has a pretty good rating on both, 4.7 of 124 reviews for the Nikon and 4.7 of 45 reviews for the Leupold. I have a Leupold VX-3 B&C reticle in a 4.5-14x40 and really like it. But the Nikon was designed for the 50 cal Omega. Which I want to get. Thanks.