RE: glazing issues. I also run the TRP S05E rotors also and occasionally drag brakes, depending on trail, depending on how steep. But that's cause it's steep, and they certainly are getting hot (I have a rotor shaped burn mark on my right arm from the last time I crashed - bike landed on me and rotor touched my arm for like 2sec before I could shove it off). They are my favorite rotor because of how true they come out of the box, and how quiet. For myself and others using them, the HS2 is decent and widely available...