Im looking at fitting new pads and discs all round on my 3.0 quattro a4. Should i replace the discs with new standard OEM discs or should i replace them with grooved and vented discs? Ive been told grooved and vented look great but dont really mkae much difference to braking and there noisy apparently. For the pads im looking at EBC Redstuff or Yellowstuff, im thinking redstuff as they are low dust rating or yellowstuff as they are better performance. Ive seen packages on ebay with 4 pads and 4 discs for £300-400.00.