Dual tube night vision offers superior depth perception and is ideal for team operations, while single tubes are more cost-effective and offer better natural situational awareness. The PVS-14, a single tube, costs $2,800-$3,800 and weighs 14 oz, whereas dual tube systems like the PS31-3W start around $7,500 and weigh 24 oz. For personal defense, the speaker prefers a single tube for its adaptability to lighting changes.
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