Discs don’t get more overstable than the Innova Star XCaliber. And now it’s the signature disc of 2017 US Champ Nate Sexton, who often relies on the disc for clutch forehand distance drives. The XCaliber has the overstability to let the biggest arms throw with full power. Sidearm or backhand. Can handle headwinds and throws with off axis torque. Definitely not designed for beginning players.