The S100 is the best of those you listed. Naturally it is the most expensive as well. It has a brighter lens and a slightly larger imaging sensor which nets higher quality images.

If you want a lot of cool toys to play with, the new Sony HX20V has every trick in the book. Cnet review the HX30V and gave it four stars; the HX20V is identical except for not having the built-in WiFi.