Current goggles, such as the AN/AVS-6s and 9s are so far ahead of the PVS-5s that they are simply not comparable. My initial training was on PVS-5s, then PVS-7s, and now I'm using AVS-9s. I am edging up on 900 hours of goggle time, but sadly it's as a crew chief, not a rated aviator...so it...