The Jade is designed to be a little more stable for players who loved the Diamond, but as their game developed needed a disc that could handle a bit more speed. It sits very comfortably in the hand, with a good tactile feel to the plastic and it holds the angles well. You CAN turn it over but unless you really force it, it fades back at the end. A very nice, reliable, and moderately stable disc.
Opto is made out of some of the world's most durable plastics. It comes in a variety of beautiful translucent colors. The Opto plastic has been developed to withstand severe punishment and extreme conditions better than other plastics. Discs in this plastic may sometimes contain some sparkle (dots).