thank you for all the advised.
i will do more homework before i decide which to go for.
You might consider what type of photo/diver you are or want to be. I love photography and use a DSLR for land photos. I shoot a P/S underwater.
Prior to the digital world, I bought the Tussey housing for my Nikon 8008S and a pro level strobe. After shooting Motormarine cameras, the options were much more open. BUT after one trip taking large gear, dealing with the large equipment and working with it to get the shots I wanted... I realized just how much more I needed in the form of dome for wide angle and port for macro work and really needed the second strobe.
I also realized the amount of practice I needed in the water with that gear. My 10 days/yr in the ocean and 5 days/yr in the pool limitations could not do well with that situation.
I came back from the trip and sold it all and went back to the MM cameras.
I now shoot the P/S camera's and spend the cash to get good ones. I would love to be shooting my DSLR underwater but unwilling to deal with the cash spent and the size and quantity of the equipment required. And still do not have the time in the water available to make it work well.
Just back from Bonaire, met a guy with the housing for my DSLR there. Took one look at what he had to deal with in the form of size and equipment, came back and checked pricing for the housing and the ports/dome I would want and confirmed... the G9 will be in my future.
I will likely never take as good a photo as could be taken with better gear but everyone that sees my work in my circle of friends/family loves them as do I. The pros that visit this website are about as concerned with my work as Tiger Woods is with my golf game but I enjoy it. And I am as impressed and amazed with their work as I am with Tiger's.
Who is your expected audience and what will satisfy the type of photo/diver you want to be?
What type of time can you spend getting good enough to make that equipment work for you?
Hope this is of some help in consideration of your decision.