Personally, my favorite is the gyro on button hold, bound to the aiming button, as Breath of the Wild originally did. I'm personally peeved about the always-on implementation on Splatoon though, because any slight tremor in your hand means your aim will suffer. (At least they had the decency of adding a dedicated recenter button.) And how do you go three games in a row not allowing the players to correct the vertical aim with the stick? What in the world is the rationale for that?