I remember when I was a kid I used to expect to win drawings. I have become embittered in my middle age, but somehow the thought of winning a 950 XL brings that nostalgic, hopeful feeling back again. *crosses fingers!*
I would choose a 950 XL mostly because of the value proposition. It's got a bit better specs and the only thing that would make me choose a 950 is the smaller screen size. I've never had a phone with over a 5" screen, so I don't know which I would prefer, so a free huge phone is a decent way to find out!