Can't think of a reason the 2.5-8x36mm leupy or the 6x36mm or 42mm won't do the job.
The nightforce is nice, but seems like overkill and extra money spent which isn't needed.
Depends on how important zero retention, tracking, reliability and durability are to you....
The 2.5-8x36mm Leupold is a decent scope but if really used the majority will develop problems... And quick.
I have been using Leupold 2.5-8s for a few years and never had problems. Then again I don't suffer from LDS.
This one is from 25 years ago and the scope is still going strong.
Some more recent "killing" with the 2.5-8.
Scott killed this nice buck at 486yds and believe it or not the optic dialed perfectly and didn't even explode. Who would have thunk it?
Now, I realize we are all victims of our experience but based on my, admittedly limited, experience if you are having trouble killing with a Leupold 2.5-8 your issues won't be fixed with a change in optic.