valterj-
If you are going to be doing a great deal of low light level shots, then the F-10 is your clear choice because it is capable of ISO settings up to ISO 1600.
The P-2 is a very likeable camera, but two things hold it back in my mind. You are paying extra for the wi-fi capability, do you really need it? and the fact that the images from the P-2 show noise in the shadow areas even in photos taken at ISO 100.
I have attached a Fuji F-10 shot taken at ISO 1600 without flash.
MT