We own both the S100 and S400. In general I have been quite happy with them, but they certainly aren't perfect. While most people dont' care, I like something with really good macro capability (shooting within inches of an object) and the Canons aren't as good at that as some others (like Olympus).

I love the size and durability, and they take very good pictures the vast majority of the time. If you're shooting in really dark large rooms, the flash might not be enough, but that is true of most point-and-shoot cameras.

The included software is pretty good. I like their panorama camera feature and software. I have made some nice pictures with that.