I had Ativ S until I broke it, now I own a Lumia 735 Which I won in a contest. Ativ S is awesome. It has a really really good Amoled display (Samsung owns in Displays) 4.8 inch which is nice. It Is very slim and light, nice design, camera quality is pretty fair. Battery at 2300mAh is decent. Other than Lumia Camera on Lumia you won't miss anything. I suggest you to check for system updates when you get it if you get it. You can also install Preview for developers app to get the latest version of WP OS. For that price it's the best Phone you can get. It may lack some Lumia apps but those are really optional. Great price.