Since the 03.05.2010 I have the WP10. Previously, I had many years the Sony DSC-T30, which unfortunately broke. So my opinion about the new camera refers largely to my predecessors camera. Meanwhile, about 300 shots with the new image has been made that can be seen. Inside, as well as external and underwater scenes (pool) are generally in order. Even in backlit scenes, the quality is better than with many other camera. Of course you should familiarize yourself with the various settings and just "play" or test. Even underwater shots are not a problem and the results are usually presentable. With the tightness, there's no problem, but the rubber gasket needs to be cleaned meticulously before use, so logically, no water can penetrate.
Personal Conclusion: For the price the camera is fully in order. Snapshot enough for everyday use, it is good, although not every picture is good. As an amateur photographer I'm quite happy.