Imo to many people change rotors prematurely. Most of the time they dont really need a grind sure is good practice. But if you put a dial guage on and don't have run out they will need into the grooves quick enough. I did my time on buses and we never ground rotors only knocked the lips off with a grinder. We had a brake test machine (driven wheel dyno type) and after a bed in the brakes were as good as new. We only changed them due to a vibration (run out) or minimum thickness.
As for rotors being ground down i prefer soft pads as opposed to the heavy duty type or metal pads. Less breaking effort required less rotor wear. I'm hearing from bendix dealer the euro brake set will be available soon comes with pads bolts sensors and clips with a soft rotor friendly pad.
If rather change pads then rotors just for the ease of it.
I'm also hoping the dba rotors are of better steel then the competitors and will outlast the way they have for me in the past. Fingers crossed


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