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What makes a NOD is the tube. A "Gen 2+" NOD is meaningless without tube performance data. STN X LPM = FOM. You probably want something with at least a Photonis tube with ~20 STN to have a FOM value around the 1200-1400 ballpark, making it a high-end European Gen 2. Then you want to shop around and compare prices (e.g. from Alpha Optics, GSCI, etc)
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