Design: Slim, Less wide & little longer easy for single hand operation.
Slight bumps at the edges are not looking so great.
Display: Superb, wide angle viewing, deeper blacks(black color emits zero light, u can chk this in a dark room) & it produces vibrant & impressive colors, Excellent Sunlight Visibility.UI: A lot of improvement can be seen in Touchwiz UI, making it more useful & customisable.