It depends under what conditions ...........for road ,as some of the others said ,i would use [do use ]standard OE kit discs and pads ......................have experimented for track days and finally with modified GT2 ,trashing discs too often went to Porsche Motorsport Discs and Pagid blues for overall cost effect was amazing ...............i am hitting IRO 170 MPH on the Lavant and stopping to turn right needs a bit of effort.......................at Donnington even on the National Circuit i have never had fade of any sort or a spongy pedal as long as the 'kit 'is warmed up and coooled down sensibly .....................but for roadworrk personally believe its just overkill........................having said all this i bought a 993 clubsport recently set up on ordinary discs ,black pagids ,air sccops and piping left it as it was ...................first time out in anger at Oulton Park was brilliant ,i dont have unlimited funds and so would nt change just for the sake of it ,and i guess what i amtrying to say is for road work ABSOLUTELY no need to uprate ................there is a pad i ve not used that sheds less dust is a different story.....................good luck just enjoy the car .............