I've read a lot about HAMR vs ACOG before making up my mind. I got HAMR and I love it. The sight is so clear it's like watching HD - every little detail is clear, further than I would dare to shoot. I did not need a spotting scope to see where my bullets land - I could see the holes through HAMR. Eye relief is almost 2x the ACOG and that matters more than you think once you start using it in and out and move around. And Delta is a great combo. I have the scope sighted at 100 yrds, and the tip of the delta at 50, which gives me perfect center of the delta at 25. Just cover close range target with the delta and pull, it will be right there. Used it shooting standing, on my hands, no sling support, and got it packed so tight as if I was using a scope. Very impressed. There are many good scopes and this is definitely one of them. The rest is up to the operator.
Pros: Clarity, accuracy, eye relief
Cons: Price, but you get what you pay for
This review was written in the old system and had content requirements that are different than reviews written today.