best wear rate would probably be koxx browns i have them on y front brake with a grind and they still have loads of life left, i had them on the back of my bike for a few months and swapped them to the front about a month ago. i use plazmatic crm pads on the back which are great and most people are wrong about them not working in the wet mine are great in the rain, mud, sloppy stuff and everything else that lessens the perfomance.