Another option for your HC7 would be Ocean Images. An aluminum housing, great prices, great service, annual service only about $50. They don't sell through dealers that I know of, only direct, based in Florida. Not a bad connection from C America. I've used mine for almost 2 years. I like the fact they have optional controls that utilize the touch screen on the monitor. Deco?? Just review your footage on the monitor. Not many housings allow you to do that. Last dive I forgot from prior use and had the camera set on manual exposure. Hard to change underwater. and the variations every minute were just too much to keep changing. I just went into the on-screen menu and changed to auto exposure. Plus, the unit is small enough to fit into a backpack for airline carryon. I carry housing, camera, batteries, tapes, and chargers; so nothing critical can get lost in baggage. I shoot a HVR-A1U Sony HDV camcorder. This is my 3rd housing and 4th camera.