This is my first Knight and I love it. It is the Vision model and it has the new breech plug and has no real blow back that I can see. I have shot my NEF Sidekick and really loved it for it's accuracy, but it had a lot of blow back and it would burn my scope. None of that with the Knight Vision. I will beusing theKnight Vision as my primary ML this next season.
As to the Leupold, it is equal to or better then theNikon Omega. With the Leupold you set up your own loads, not just the ones the Nikon folks tell you to. But one of the most important things about the Leupold over the Nikon, CLARITY!!! They both run about the same in price, but you would do well to look into theLeupold.
All I can say is that I am perfectly happy.