I bought some sintered break pads for my 650L. I think they were geared more for performance than longevity but man! Any suggestions on a good pad that doesn't give up the goat so quickly. I know that some performance is lost with harder, longer wearing material but I would be willing to give a little. The stock pads worked fine for me and lasted a long time so I might go oem next time. Have you guys experienced what I am talking about?