Here is a side-by-side look at the specifications:

For low light, the p700 would be the better choice.
It has a faster lens rating (when zoomed).

The ISO goes to 640 on the P700.

The P700 was built to compete with the Canon G6 and the Sony V3. That is a pretty nice neighborhood.


All of the cameras you list take excellent photos.

The two Casio cameras have some important manual controls"
Shutter Priority
Aperture Priority

The Nikon 7900 is point-and-shoot, so it does not have those manual controls. However it is loaded with scene modes.