How is the quality of the Stillen rotors? Specifically the J-hook rotors? I found some feedback, but not much. One thing I found was that they are 1lb lighter than stock (not much but better than being heavier). I want to switch out the stock rotors mostly for looks, but if I can improve on the stopping distance or be lighter....all the better!! I bought the Baer Decela-rotors for my '10 SS and I was NOT impressed with them. I don't want to make the same mistake twice. And I found the Stillen rotors for a smoking good price! Thanks.