This housing has been nothing but flawless for me. The housing has not been used since its return from Reef Photo's bi-annual maintenance.
Reef Photo replaced a worn o-ring from the 45º viewfinder, cleaned all parts and lenses of the viewfinder, replaced the back and top plastic window o-rings with new, cleaned the leak detector, function-tested all parts of the housing, and pressure tested the housing for 45 minutes @ 120 feet.
I'm including all the lens zoom gears, including one for the Tokina 10-17, plus two synch cords.
If you have never used a 45º viewfinder before, it takes a couple of macro dives to get used to, but I would never go back to floating on my head to "get down, shoot up" again. You will love it.
The housing is for sale for $2500. I want to hold on to the Nikon D700 camera until after an August dive trip to Alaska.