I have EBC Turbo-Groove discs and DS2500 pads and I think it's a very good combination. I did have red-stuff pads on when I bought the car and they're very good too, but they need to warm up really and there have been reports that the red-stuff/turbo-groove combination has caused cracking discs. I think this is on very old discs mind you.
Take a look in my RR thread (click the car below) and you should be able to see some pics of the discs in the Brembo Refurb section. I think they look the mutts nuts too, which makes them even better to me.
Of course, if you have the cash, two-piece discs would be better... I think AP Racing do some very good ones for the LCR (assume it's an LCR you have from your avatar?)