I think the ones I just fitted on the front are TRW, they were significantly cheaper than the genuine parts I've previously bought, but the performance is at least as good, with less brake dust. There's a big difference between quality and cheap parts when it comes to brakes, cheaper rotors will be much more likely to warp.
Pros: performance as good, less brake dust
Cons: cheaper rotors warp easily
Vehicle:
Volkswagen Phaeton
