Sony WH-1000XM4 review: The best wireless headphones we've ever tested

Sony has, for a while, been a dominant force in personal listening. The company's WH-1000X series is an example of truly class-leading tech, especially the almost-universally-praised 1000XM3s, widely seen as the best wireless headphones of their generation. We're particularly discerning and often aloof, so wouldn't like to make that distinction...