I have waited long enough to get digital.  I have been using a Sealife Reefmaster with external flash.  Now I am going through the process of evaluating what kind of digital camera I want to use underwater.  First and foremost, I want a simple point and shoot camera.  I have looked at Reefmaster’s new DC500, Sea & Sea DX-750G, and a Cannon Powershot A610.  I am leaning toward the Cannon A610 with a Cannon waterproof case.  This camera will work well on both land and underwater.  Let me know what you use and how you like it.