I wanted to try those out for a long time. But by the time I was able to afford them, I realized I really really needed wireless capability. And if I remember that naming order correctly, hd 600 doesn't offer wireless.Philips Fidelio X2? Seriously? I'd've said the Sennheiserr HD600s were way, way, better (and the same price on Amazon.com right now, albeit discounted)