I will definitely choose the Microsoft Lumia 950XL because -
1. I am quite used to large screens.
2. Liquid cooling, my 930 gets really hot and annoying sometimes.
3. Windows Hello which seems a very cool technology. I would love to try it out.
4. Continuum because I've burnt my PC's motherboard and maybe 950XL may be a fine replacement for doing simple productivity tasks.
5. The triple RGB LED flash and the camera! Although the camera on my 930 is quite good but I've noticed that it has got scratches on the back lens and sometimes it gives a little bit blurred pictures because dirt and oil accumulates on lens. So, if want to click something first of all I have to clean the cover lens.
6. 950XL seems to have no hardware defect, software can be managed. My 930 has given me a lot of hardware problems. Currently its microphone doesn't work, earlier it had a dead pixel line on display issue for which I got a replacement. I settled for black one instead of green

7. 950XL will work flawlessly at least for next three years!