What's the most important feature of an MP3 player?

A. High-quality audio and video playback
B. Access to apps like The Urinal Test

Sony is hoping a lot of consumers will choose option A. Its latest X Series Walkman one-ups the iPod Touch with a dazzling 3-inch touchscreen that allows users to watch movies at ultrawide angles. The device also has noise cancellation technology, which works with the included headphones. And you can download hundreds of songs for free from Slacker Internet radio stations and listen to them anywhere. COST: $299 (16GB); $399 (32GB)