Quoted:
I wouldnt trust anything less than a gen3 monocular. I have used the gen 2 with ym guard unit and have been less than impressed. They are no where near their limit of hours and everything is blurry and things are hard to maek out at even 50 yds. I have used gen 3's in the past and have been more than impressed with them especially in conjuction with peq4 ir lasers
View Quote
Most NVD have both a objective lens and an eye lens that can be focused independantly. If you're having that bad of problems with your Gen 2 stuff, you either need to focus it, or it needs overhauled and purged.
I have an ITT Gen 2 Night Mariner monocular that is awesome. It focuses from 1 foot to infinity and is much much clearer than any Russian or Israeli Gen 1+ or Gen 2 I've seen. Automatic shutoff and overload protection. Upwards of 10,000 hours of tube life. Cost less than $250 on a badly listed ebay auction (retails around $1900).
My father has a Gen 3 monocular from ITT and the only difference I can tell from the Gen 2 is a slight, almost imperceptably better clarity. The line pairs per millimeter are better, but the light amplification is almost identicle. If you hold my Gen 2 up to one eye and his Gen 3 up to the other, you can't tell the difference. Cost $1000 on a buy it now auction (retails around $2700).
An uncle has a cheapo Gen 1+ monocular from Night Owl that he paid around $170 for. It has a small LED on the front that acts as the IR source. It is utter crap compared to the Gen 2 or Gen 3. Without an IR source I think a decent pair of binoculars would gather more light.
If you can't find a good deal, but absolutely have to have an NVD toy to play with, the Night Owl Gen 1 is better than a cardboard tube painted black. But in my opinion there are much better deals to be had.