I bought the Gold version of the iPhone 5S to my wife, and I must admit, it looks very nice :) better than my Silver version.
I did an unboxing of it, and as I already said when I did the unboxing of my silver version, it feels so light in your hand! Much lighter than the iPhone 4S and even the iPhone 5. And still with excellent battery life.
I like the golden ring around the home button. It is more visible than the silver ring around mine.