I’m running MT Trails and up until a few months ago RT77’s, now HC Storms.
The brakes worked well enough on the Shimano rotors, but a few thread discoveries led to looking at specifications for rotors and the discovery that Magura tell you to throw their rotors away when they’re the same thickness Shimano rotors are new. For the price of a pair of rotors I thought it would be worth experimenting and as a result I’ll pay a lot more attention to rotor specs in future.
The brakes generally feel better on the HC Storm’s – not a huge difference but it’s there, and given dome of the stunts people will attempt to improve brake feel and performance, I reckon using the right thickness rotor is a pretty sane upgrade… has to be said the Shimano rotors look secksier though.