I purchased it in 2014, and at that time it costed quite a bit, but I was never dissapointed with my choice. And I strongly feel that this was the phone with which samsung entered the world of r& d and the other phones which have come up and surprised the world is a consequence and evolution of this phone only.
What makes this phone great?
There are a lot of factors, like the air swipe and face detection sensor which automatically pauses or plays video depending upon whether you are looking at the screen or not.
Secondly the camera performance was among the best of that time, there were so many modes which impressed everyone. It was a future phone according to that time.
The processor was very powerful and the 2 gb ram aided it very well and they were able to do tasks seamlessly .
Another interesting feature was the thinness of the phone. It terms of thinness it had no competitor in it's time. The phone was very handy and comfortably fitted in the hand .
The os experience ir the samsung customization wss very appteciable and it had received ota updates for quite a period of time as you would expect from a samsung flagship.The phone was a major step from samsung in the mobile market and the legacy they have built is completely and entirely because of this.