After nearly 6 months with my Tungsten GTI, I still love the colour. It really makes the Mk7 curves and creases stand out. Also seems to be quite chip resistant, too, although I am now touching wood and crossing fingers! Salesman tried to talk me out of TS and I actually ordered CSG, but changed it a week later, after parking my Deep Pearl Black GTD next to a Carbon one and deciding that I wanted a change from black. My wife has a Reflex Polo and the TS is significantly different, by the way.
Go TS - you will love it.