The Good: Simple trouble free rotor. Stays straight as well. I have had it on a dirt jump bike with Hope M4 brakes. have no trouble with this rotor at all. Rotor was used with Avid mechanical brakes before the Hope's. Thought I might need to get a new rotor for M4's but this one has worked great.
The Bad: No issues to speak of.
Nice simple rotor. Can also be a good low cost back-up rotor for travel.