Let us know how you get on mate as i'm currently looking at replacing my discs and pads and have no idea what to do for the rears. Possibly MTEC disks with Brembo pads. OEM rear pads are quite expensive though compared to the fronts.
Will keep you posted - want to keep them non groved or drilled as to not affect my insurance.
Lol - skintus now tho- not from the Brembo set up but bought the Mrs a new Touareg 262 R Line... Probably will be next month.