I'll see about a comparison between the S7 and Elite X3 later. Sad his Note 7 cracked, because it was a decent device - for android. Still suffered from the crappy UI, but nice and fast.
Here's the promised case. I put it on this afternoon. Very slim and not bulky at all. The Elite X3 is slightly thinner than my 1520, so it is easier to hold. One-handed use is absolutely not an issue. While I liked the 5.7" size of my 950xl, this does not feel too big at all. Love the screen real estate.
Of course, I have to show off the desk dock. I was a little disappointed. Turns out the dock has a display port connection. I cannot stand all these monitor types - HDMI, Display Port, Mini HDMI, DVI - they drive me nuts. In any case, I quickly setup the desk dock and connected to one of my 27" monitors at work. I was able to do the usual in Continuunm, but most importantly will use this when I'm working over at my second desk to remote into my Surface Pro, nicely docked in my office. This will save me from having to carry the Surface Pro around.