I'd want the Lumia 950 XL for its larger screen size. Going to school with my laptop was a big headache so I got a cheap 8" Windows tablet. I got really accustomed to the large screen. So far I have been looking for a Windows phone to replace may aging Samsung Galaxy SIII Mini, which is tiny in comparison to my sister's phone, with a 5.5" screen. I feel like I need a device with a screen that at minimum is still bigger than 5". Once you go big you can't go back as easily.