Personally, I use a Nimar housing and it's never failed me. What I mean by that is, it's never flooded or cracked. Although I've dropped the housing quite a few times. I enjoy having a clear housing rather than an aluminum case(it's better don't get me wrong) but I clear because I can see, just in case, if my housing floods. I DO NOT want my baby to get wet. But um, here's a link to a nimar casing, check it out if you want
The problem with a clear housing is your camera light meter is not getting a true reading of what you lens is going to shoot. Then when your camera strob fires to fire your external strobs the camera strob is to close to your lens producing particles in front of your photo. Then for a wide angle distant shoot you have to remember to turn off your camera strob or again it will capture particles in the water. Your comment about seeing water in your housing, Nauitcam has a one drop water sensor but if you see water inside your clear housing it is all over by then. The only reason anybody would want a clear housing, it is cheaper.
