no experience of them personally, but ultimately they are all the same in basic design, so any uprated disk is better than the standard disks( although IMHO the standard brakes are very good) Ring Ktec and see how much there standard size uprated disks are... probably on par with similar brands price wise, and you will get the discount if you ask!
you can throw loads of money at pads, but most people on here will say XXXbrand pads are great, mainly cos they dont create so much dust on the alloys.... but in braking terms they are at there optimum at high temp, which is great if your in a rally... not so good round the high street, and on the track you shouldnt be braking that mentally to get them hot...
Standard pads work best!!