Sony is certainly no stranger to the headphone market. The company's portable line may very well be the most popular aftermarket earphones. It has quite an array of full-size "cans" as well as a decent selection of noise-canceling models. The latest high-end set to hit virtual retail shelves combines the two. The MDR-NC500D Digital Noise Canceling Headphones offer solid sound, high-quality construction, plentiful features, and a luxury price tag ($400) to match. These 'phones aren't without their flaws, but they're still a great option for frequent fliers who have cash to spare and a distaste for low-end rumble. For more info, or click the pic for the photos.