Have you not seen the posts regarding warped optical discs, rotors shredding red powder into the internals, rolled seals, timing adjustment not marked for "0" reference, etc.?

"Looks" better? Does it perform better? Evidence to support?

 

5,000 miles, and probably 20 passes spinning 7k. Thats twice as long as a stock style would have lasted. 5-7 passes with the spray in the 1/4 and the stock style opti would die. I went through 3, every time I would push the car real hard down the 1/4 it would die.