How has no one replied to this yet?!!! I found 82 percent of these hilarious! Granted Im not an engineer nor do play one on TV, but this gold!
I also had no need for NV, so I went with the 512. As far as the submersion, if I'm 10 feet under water and still holding onto my rifle, something has gone terribly awry and I don't think an extra 23 feet is going to matter to me. YMMV
G21 Club #858