Is is very interesting to see an actual video of those Faber HP100 tanks in sidemount, thank you for sharing it. I wonder how these tanks trim when they get empty, and how well different techniques (weights, messing with attachment, etc.) address the issue with getting butt floaty. A picture is worth a 1000 words, and a video is worth a 1000 pictures... do you happen to have a video with the tanks closer to 500psi? When I get another pair, they will probably be Faber HP100s... it would be good to learn from your experiences.