This camera is a workhorse and does as advertised, but could be simpler to use and have a better screen.
What don't I like? Battery life could be better, as could the quality of the color. The plastic on the rear screen is easily scratched. However, these are minor issues considering everything this camera can do and survive. Great camera.
It's true that the photo quality is only good, not great, BUT I would not dream of taking my big expensive Canon where I take this camera, and that's the whole point. I can easily tweak the photos in iPhoto or Photoshop. As a result I have lots of perfectly decent photos that I otherwise wouldn't.
The reason I give it a 9, not a 10, is because the camera does not have a viewfinder and the LCD is almost impossible to see in bright sunlight, especially if you're wearing sunglasses. This is a real design flaw in a cameras that is clearly meant to be used outdoors! I've had pretty good luck just aiming it by "feel", and since it's digital I can take multiple shots hoping one will be framed acceptably. It slips comfortably into a pocket of my PFD so it's always handy. It has lots of presets and I've found the ones for underwater are pretty good.
The downside of this camera is that besides its indestructible construction, it is basically just like any other "point and shoot" camera. Battery life is average (editing pictures uses up a lot of battery life, because the camera makes copies instead of altering the original shot.) Video is not bad, and records at a scant 10 frames per second (I think.) The flash is not spectacular (compared to my Casio Exilim point and shoot, which has an amazingly overpowered flash,) and it occasionally takes awhile for the camera to decide what it's trying to focus in on.
All in all, the durability of this camera really makes up for its average performance (which is why it gets an 8) as a "point and shoot." I would recommend this camera to anyone who abuses their equipment (I certainly do) and wants to take photos anywhere one would take any other camera in, and walk out with a novelty paperweight and a sad story.