I don't mean to bash, I was actually fishing for other reasons to choose the s4 that I'm not aware of.
Regarding what I said, no I don't like the look of the phone; it is one of the cheapest looking phones on the entire market. And the software features I mentioned:
Group Play - When have you ever thought; I love annoying everybody around me by blasting my music through my phone's terrible speakers but it just isn't enough. If only I could blast it through other people's terrible speakers at the same time!
Air Gesture & Air View - This may save fingerprints on your phone (I actually doubt it will unless you are treating your screen like lava) but it seems far too slow to be worth it. Besides, how is it easier to wave your hand in front of a screen than to touch it. Apparently this is for hands free / full situations like when you are carrying groceries. But surely if you can't touch the screen then the problem probably isn't that you are 1cm too far away from the phone to reach it.
Smart View - If I am watching a video and need to go to the toilet or something then i will just hit pause- it is very easy. If I feel like stretching my neck a bit, maybe by turning my head to the left then I wouldn't want the to pause at all - it doesn't matter if I am not looking for two seconds. If it did I would glue the phone to my face.
I guess my main criticism of these features is that they resolve problems that don't exist, in many cases providing a solution which is even more awkward to use than the current method.