I so want a Lumia 1020. The camera on there is so bad ***. I can think of a ton of stuff I can use it for. I actually like the 8X as my daily driver. Ideally I would love to get one of the international LTE models and put the wireless charging feature there and that would make a perfect daily driver for me. Then I would switch over to my Lumia when I'm going out just to have a killer camera on hand. Still, if you asked me to pick one phone as my only phone to have...it is the ATIV S. Because for my all around needs, it covers all bases. The camera is good enough. The phone is light enough. Design wise, it looks professional. Big screen for multimedia. Replaceable battery. MicroSD support. If I was on bare minimum, I'd get that, a back up battery and a Asus tab and I'm set for the next 2 years. The Ativ S was what I would have bought last year at launch if I could have found one.
But I'm greedy. So if it were up to me, I'd have all 3...but I may just go with getting a 1020 to replace my 810. Now, if I can get the 810 sold faster, then I'd buy a Ativ S and wait until next summer when I can get a 1020 cheaper...