Objective: good image quality (it was clear that DSLR will remain unmatched) and good video quality (finishing iMovie)
The P300 is an excellent workmanship. Who much photographed in low light and in rooms is very well served with her. The larger chip the S95 can no longer align here. The two were in my test shots on the same level. The quality of the video is significantly better than in the S95 in the P300. Also feel and craftsmanship make an impression on top of Nikon.
Who travels a lot in the open, mostly sufficient light is well served with the S8100 / S9100. The video function of both is excellent, with the S9100 / 8100 is even sharper, perhaps is due to the lower initial light intensity. The cameras are fast and color-neutral and the footage can be unlike HX7V quick and easy process in iMovie. Why the S9100 is partially negative feedback, I could not understand in my extensive testing! When HX7V sg are mts files saved as a movie, which in iMovie in "Apple Intermediate Codec" converted fairly bloat (factor 3-4). In addition, the HX7V of image sharpness and color fidelity with the Nikons not keep up! -The Surprised me!
Conclusion:
little light, mainly indoor: P300
enough light, mainly outdoor, frequently Video: S8100 / S9100 (the decision depends on the focal length from here)