Sun-Fly's polyclay ceramics chips look, sound, and handle better than their flat non-debossed ceramic chips, imo - but require a ceramic print design that is compatible with the clay chip based mold design. They offer several different polyclay mold design choices (including customs, for an extra mold cost).
There are also Chinese vendors offering similar debossed mold ceramic products for roughly half the cost at group buy pricing. Most recent Chinese GBs have been for the cards mold design.
The Sun-Fly polyinno hybrid ceramics are a different animal, with a recessed center section that contains a laminated printed label. The Sun-Fly 43mm hybrid chip with the smaller 25mm recess is the best chip they offer imo (compared to their larger-recess and two 39mm versions) -- it is one of my favorite chip designs, outperforming all other ceramics, plastics, and even some clay chips.
Chinese vendors also sell similar hybrid products for significantly less, although they do not currently offer the 43mm/25mm hybrid version.
Get samples.