Only NV I ever used was night shoots while in the Corps, never used anything else. When it comes to 1st Gen vs 2nd, 3rd, and 4th. I don't have the money for anything high-end, but I don't want to get junk, either. Are the 1st/2nd generation scopes worth the $500-$700 I can afford to spend? Really all I'd be using it for is the occasional coyote hunt. With that purpose in mind, should I go for a whole scope, or is there a sort of NV attachment I could get that would fit onto a regular rifle scope? Thanks for any advice/suggestions.