The text describes the rivalry between Sony and Bose in the active noise-canceling (ANC) headphones market, with both companies offering flagship models at competitive prices. Sony offers the WH-1000XM4 for 8 at Amazon, known for superior sound quality and iconic design, while Bose offers the QuietComfort Headphones for 9, praised for comfort and natural sound profile. Sony has also released the WH-1000XM5 for 8, while Bose has the QuietComfort Ultra for 9, both promising premium sound and silence.