Let's start with the good. It takes great pictures and video, even under water. It takes the best pictures of any compact digital camera I've owned. But the ability to shoot underwater is why we got it, and those pictures are amazing. We took both still pictures and video, and they both came out great.
The Easy Auto mode figures out the most common scenes, and it automatically switches to underwater mode. We started taking video above the water, then went under the water (and the camera automatically switched to Underwater mode), then went back above the water. The video came out great.
However, you can't change most of the settings from Easy Auto mode. The Auto mode (strangely enough) is where you can change most of your settings.But the strangest thing is all the scene types you can choose - you have normal things like Portrait and Landscape, but you also have specialty scenes like Food, Sunset, and Fireworks. They each make the appropriate settings automatically so the intent is you don't have to mess with the settings. I've only tried a couple of these, including the very cool Pet Portrait), and they all came out great.
The GPS feature is nice, but you can accomplish nearly the same thing by tagging your pictures manually with your location. It does cause the battery to wear down much quicker though, so I usually leave this off.
The side button can either display the map, or provide a menu. The map doesn't do anything with the GPS turned off, but it's the only place to access the GPS menu. In the menu mode, you have to tilt the camera left and right or forward and back to change the settings. This doesn't work easily (for me) and I just found it very silly. So I leave it in map mode.
The other thing I didn't like was that the default setting for Auto Focus is to focus once. This is not what you expect from a digital camera, and especially not for a video camera. You can change it to full-focus where it is constantly refocusing. This is more natural for me and especially for video. Single focus seems especially silly for video, but since I was able to change this, it wasn't a problem.
Overall, this is, by far, the best compact digital camera I've ever owned. I highly recommend it.