dryfly is correct.....world class glass, very well built, famous Leupold warranty and service. What's not to like? I compared mine directly to some other glass I had available, the SLC, ZEn ED2, EL, and trinovid. The Zen's were very slightly brighter, but the colors through the GR's just popped out at me...amazing view. It was noticably better than the SLC and trinovid, and ever so slightly behind the EL, although the GR will be much tougher than the EL as we've trashed two pair of EL's in the past two years. The heavier weight helps me hold them steadier, so I think that's a plus.