With all the years that I shot underwater with Nikonos cameras I never had a flood. My U/W photography students flooded cameras though. In using my Aquatica housing for the Nikon F3, I never had a flood either. I taught meticulous 'O' ring maintenance as I use the cameras myself. I didn't even flood my Nikonos RS bodies. I am less concerned about flooding and maintenance and still not sure about housings. I wonder about a few things. The temptation for most U/W photographers is to have all of the camera functions available. If you constantly change settings you end up spending more time on camera settings and missing the very things that are unique about imaging underwater. Active subjects. Lighting is very important and I've found that TTL is not reliable enough for me underwater so I don't look for that. I use Nikonos dual SB-105 strobes and sometimes a third one. My questions are regarding housings that I can focus quickly, accurately, and adjust easily. Can I find a housing that I can get into tight places? When using any housing will live view work better in some more than others? Is there a housing that is more stable for video than others? Is there a particular housing that works better with an add-on viewfinder? Is there a housing that has enough room for the back of the camera to add an internal eyepiece magnifier like I had in my F3 Aquatica?