I own about two dozen pairs of headphones mostly in the $150-$300 price range, and if I could keep only one pair, that would be... ATH-M50x, no joke. As much as I love the sound of higher-end and open-back headphones, I haven't found any other wired headphone that is as good when it comes to convenience - closed-back with great sound isolation, easy to drive, good build quality, foldable, uses detachable cables, and comfortable enough for long listening sessions.