The Infinite Discs Tomb is flat and beaded and will hold up to a ton of power. It is stable enough for forehands and backhand it will hold a straight flight into a moderate headwind. It is great to use off the tee or putting into a headwind and you need to trust the disc to hold up without being too overstable.
Metal Flake C-Blend is the same durability and make up as C-Blend Plastic (comparable to Innova Champion), but Metal Flake has sparkle flakes inside the plastic. This makes the plastic not only durable and long-lasting, but also adds more cosmetic appeal with extra sparkle.