Waste? Have had project mu on my car for years. They cope really well to track work and don't crack like I have experienced other rotors doing. The 2 piece I have on the front of my GTR have stood up really, really well. Something I cant say for their equivalent in a DBA or an RDA. So, yeah, if waste is fixing it once, properly, then waste away. You don't need to spend big dollars on Pommie stuff.