I have a Gen 1 scope which leaves a lot to be desired in terms of clarity and range. I have used an ITT gen 3 which was just amazing. However, it was like $5K new some years ago. I think gen 3's still run $2500 plus. Anyhow, they advertise Gen 2's for $600-1800. I'm wondering if anyone can give me some subjective comparison as to how a gen 2 stacks up vs. a gen 3.