Are ppl testing on a CD using a qd, wax, polish or is it in the dry?
If I use GEPC polish for instance on a CD, I don't see much marring (under halogens) using any of my mf's (Miracle, Yosteve, Pakshak, DFT, CBT, UDT, Sontara, 3M,
Meguiar's, Elite, Viper Perfect, Viper Power etc...).