Firstly you will love the GTD its the car that gives you a good chunk of everything and personally feel as good about it now as did when got it 2.5 years back. Would not change if did not have to and truly be sad to see it go.
CSG was my second colour as always wanted the Golf in white but having seen more and more in flesh would say the CSG is my favourite colour and these photos support that

If the CSG was a choice on the R there would be no dilemma over colour choice when change next.