We use Ivoclar's InLine porcelain. I've found that the esthetics are about equal to dsign, but the handling characteristics are much better. I did like dsign quite a bit, but there were times when I needed to have a more predictable result on the first bake. But dsign is an organically based porcelain, so as it dries, it forms a skin, then when the vac pulls, it can actually pull the air and water through the skin, causing steam tears. We eventually figured a way around that, but it wasn't 100% predictable.
Craig