Pmsl.....you don't get sarcasm very well do you mate! I've used standard discs with 4x4 calipers and good quality ds2500 pads for years, mainly on track days and never really had issues with braking performance, in fact people have been shocked at how well they work! For the price of drilled/grooved discs they just aren't that much better...an rst doesn't weigh massive amounts and really doesn't need a huge set of brakes to do the job well. Can't believe i had to explain that to you either!