No mat works best for me. I tried a few including graphite, bostom acoustic and TTW triple laminated with copper and carbon fiber, millennium.
TW Acustic Turntable Mat
From Highwater Sounds Facebook page, Jeff Catalano posted a pic of the new TW Acustic turntable mat - sourced from Japan. It looks pretty substantial. I can always email Jeff on info, but hate to bother him about a turntable mat. Anyone else have any info or cost on this new mat?