I use Symposium Ultra under my Super Scoutmaster with rim-drive, which is great. All around better performance, deeper tighter bass, deeper soundstage, etc. I had a Gingko under my SSM before I went to rimdrive, which was very good, but the Gingko didn't work with rimdrive, as the table and arm moved laterally with the Gingko's tennis ball suspension system. I use Symposium shelves under all of my components, and rollerblocks under my CD transport. Need to use cones or point pod plates, not rubber feet for best performance.
