Anyone have much experience with night vision rifle scopes? I have a Gen. 2 monocular that can see really well.. but I really need a rifle scope.. I have not used a Gen 1 image device before... A gen 2 scope runs $2,000 to $5,000 but I can get a Gen 1 scope for less than $600 ... Is a Gen 1 scope worth getting? or should I just save up to get a Gen 2 or 3 ? or is the price just hype, and a Gen 1 will work ok?