The Underwater SeaLife Camera

Buying my first underwater camera! Help please. :]?

Hi there!
I am buying my first underwater camera, and I'm looking for some advice. I have been asking around on some scuba forums, but I want some advice from here too.
These are the 2 that I am pretty much deciding between:

http://www.amazon.com/canon-wp-dc12…

http://www.amazon.com/canon-wp-dc16…

Although I am unsure of the major differences, as the second one is quite cheaper then the first, and seems to have more MP and zoom.
There is also another offer I have received for an Olympus C4000 with PT-010 housing Sealife SL960D strobe with optical cable, arm and tray for $200. Decent deal??

Thanks a lot! :]

I've had a couple of underwater cameras over the years and my advice is to not spend a lot of money because you won't use it all that much… unless you are diving once or twice a week, that is.