[Closed] disc brake rotors

Not particularly, I've used all sorts with my Martas. If I recall correctly, Like Shimano you can micro adjust the position of the Marta calipers, so don't have to use shims and stuff on the rotors. Not all rotors are the same size tho, so not sure about Hope floaters et al.

the best ones have been XTR Ice Tech, more power and no squeal in the wet, compared to Magura wavey, old XT and some Avid ones. I've never tried those super lightweight rotors (KCNC etc), if that's what you're considering.