Copen is outright broken once you learn how to use him, in that his prevasion counter-balances to his air-dashing (which generally refills if you hit something) rather than to any actual attack, and unlike GV he can begin his recharge from midair (which is itself another attack method). His armor programming is a LOT more flexible than GV's equipment, as well, in that there's no conflict of categories. My preferred casual play style is Gutless Kudos with no checkpoints for maximum song time. For GV, that means giving up one of two eye slots. For Copen, one memory unit out of, what, 30-something?