I have the drilled and slotted Brembo (F&R) with axxis ultimate pads (F&R) for track use. First time at Gingerman and did NOT notice any brake fade. These things do really grab. I used SLK320 part numbers for the rotors. If they are talking about calipers...then I can't help you there. I'm not racing, just hot laps, so an improved (bigger, better) caliper probably can't be justifiable (for me). But I am thinking about changing to SS brake lines...

I swap these off after track. My setup makes too much noise and vibration at street speeds.