Hi,
I had the same question, with a real mix of people saying it's worth it versus don't waste your money.
I test drove the 190HP DSG Diesel (which is the car I'm getting) on 19" wheels, WITHOUT DCC.......and decided I didn't need it. I like quite a firm ride rather than soft, and was very happy with the ride and performance of the standard suspension, so no need to spend an extra £1000.....I've bought some more options instead! The ride was nice and firm (though not too firm) and felt quite sporty without DCC.
If you wanted a softer, more comfortable, more cushioned ride then I would suggest it might be worth looking at (or avoid 19" wheels), but if your preference (like mine) is for a stiffer set-up then you'll probably be quite happy with the standard suspension and an extra £1000 in your pocket.
But at the end of the day it's personal choice, and I'm sure others will come on here and argue for DCC 😀