American Rifleman
reviewed Leupold HAMR & DeltaPoint.
In short, HAMR is lighter than comparable Trijicon ACOG, with greater eye-relief. But ACOG has larger objective lens as well as no need for battery and the author concludes that it comes down to personal needs/preference.
Price: $129.99(HAMR only), 1549.99(with DeltaPoint)
From:
American Rifleman