I use the Axxis . I'm not sure if there are different Axxis optional pads. I have the Axxis "soft" which are softer than stock. It's for a street car so I have a better response with the softer pads than stock because they are usually slammed at hy speeds when Cold and my front wheels don't lock up before the rears do any more. And I posted about using the pads in the steepest mountain down hill in the country, which was 8deg., and they held up very good.
I think JW suggested them........Ron