Which one? Eliminator? I, 2 or 3?
I can tell you from hands on experience with the Eliminator 3 (3-12 and 4-16) that its an absolute game changer. This assumes the user is capable of following instructions, skilled at shooting fundamentals and basic math. If your a hand-loader and you chronograph/dope your own loads its an absolutely epic weapon sight. If Burris/Steiner would give the scope a better range of low brightness settings it would be capable 24/7 with little effort. Currently at its lowest brightness setting its too bright to compliment a gen 3 night vision monocular at the ocular end (even with an IR filter).
If your an experienced long range shooter it gives you the ability to make ridiculously accurate hits at a variety of ranges (on very small targets) in seconds instead of minutes.