Thanks for the replies all. Looks like its exactly what I'm after.
Am ordering a GTD as a company car this week, one of the lease companies has the colour I want (Carbon Grey) for delivery in 2 weeks but it doesn't have the RCD510 which I did want, but I'm impatient and didn't fancy waiting until Jan/Feb for the car.
Would have got the GTI but company car tax and fuel costs bit high compared with the GTD.