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.
Halo S-Blend is a collectible, decorative version of S-Blend where there is a different color in the rim than in the flight plate. It is a durable, high-quality plastic preferred by professional players and collectors alike.