Defy

Axiom Discs says this about the Defy:

The Defy is a straight-stable 21.5mm distance driver from Axiom Discs. The Defy is straight with a nice bite of overstability at the end, and is best described as a heavily seasoned MVP Photon or a longer Axiom Crave. Like the Crave the Defy exhibits remarkable resistance to turnover even at high power.