oh well.
here's a comparison from my point of view:
- You don't need 5' for an HD resolution(i don't watch movies on my phone), the ativ s just stands perfectly in my hand. One hand usage is better for me.
- Lumia 830 screen is grey and pops less than the ATIV S (that sounds logical). However 830 screen legibility in direct sunlight is perfect. it also has an advantage when watching pictures, it seems color accuracy is better on the 830.
- You cannot add a lot of live tiles to 830 homescreen without having it to stutter. Cortana is the worst case, this is something you don't experience on the ATIV S.
- 830 feels way more premium.
- camera is ok on the ATIV S and awesome in the 830 (however, selfie cam shots look grey on my 830)
So basically, for speed and usability, ATIV S seems better to me.
For look, camera, battery life and softwares, 830 seems better to me.
So obviously, in sept. 2015, if you have to chose, the 830 is a better choice.
errr.... if the camera don't die in the first month after your purchase.