I have had 920 since launch. Knowing what I do now, I would have never bought it. I don't know much about Ativ S, but I would get one today if I could. 920 has had a lot of problems. Some OS, but mostly Nokia software and hardware faults. Bad design, assembly or components, I don't know. But, I'm on #2 and I know some went through 3 or 4 before they got one that worked. Samsungs are made of plastic but they didn't become the #1 volume phone maker by accident. I am stuck with my 920 until AtivS comes to States or Surface Phone is released. I couldn't recommend 920 to anybody with a straight face. But on the other hand, I have no Ativ S to compare. 920 may be better of the two for all I know. But next flagship phone to market with good customer reviews gets my money. As long as its not a Nokia. Do yourself a favor, hold off until real people start reviewing phone and you get the full picture and not a lot of hype.