I've often found that the wavy rotors that come with Avid mechanicals to be very flimsy and sometimes difficult to keep true. Shimano XT rotors, even the 203mm size, seem to keep their shape pretty well. I haven't had much experience with other rotors, at least for extended periods.
So who, in your opinion, makes the strongest rotors that stay true the best?
BTW, I did try a search to see if any other posts had been made along these lines, but I wasn't having much luck.
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Thread: Strongest rotor?