So I ordered here on Amazon to test the models P5, P7 and P14, because I could see the light output in Natura adjust very difficult to me. As almost always yielded Amazon dart quickly ordered flashlights. All together offer in my eyes for the respective size of a truly incredible light output, although I could not tell the huge difference between the P7 and P14. According to the technical data sheet, the batteries of the P14 due to the capacity of course keep much longer, but for me that was not a primary purchase criterion and the P7 offers just in the wide spread a more uniform light and fit due to the smaller size just in a jacket pocket. But the P14 is truly massive.
The P5 offers for this magnitude also an incredibly bright light and fits determined in any pocket, but was a bit too dainty for me.
With the P 7 I think I have found a perfect "egg-laying Wollmischsau". This can be very well used for example for work on the car, even in hard to reach places, for night walks, when time turns the electricity in the house, or want to see in the dark garden to the right.
All three models are well in hand, look very high quality and are processed very clean.
For battery life I can not say anything yet.
I hope that I was able to contribute a little to the right buying decision.