I got my new GR mpc in today - It's a 64Z* (same cup I'm using now) but it was made with a clear polycarbonite plastic rim to protect my chops from the intense heat while in the desert. I played the last half of the stage band rehersal with it, and it is absolutely amazing! There is a bit more grip due to the plastic (doesnt slip), but I'm playing on a real mpc instead of the usual plastic jobs that suck. There is no detectable seam between the metal and plastic, and the overall craftsmanship is perfect. A big thanx to GR and Brian Scriver!!