Conclusion: These chunky headphones from Creative could be a bit more comfy, but they eliminate as much noise as the Quiet Comfort 2, sound much better, can operate passively, and can play more loudly.
Pros: Pleasant audio performance—much better than Bose's Quiet Comforts. Excellent noise cancellation. Well-defined bass. More powerful output than the Quiet Comfort 2's. iPhone-compatible extension cable.
Cons: Cable fits awkwardly into headphones. The X-Fi 3D special effect isn't great. Set is less comfy than Bose's Quiet Comfort 2.
Summary: The Aurvana X-Fi is not inexpensive. But the nearest competitor, Bose's QuietComfort 2, costs just as much and offers half the features. Which would you rather have – headphones that merely block noise, or headphones that block noise and improve your music? The choice is obvious.
Pros: Improve quality of MP3 files, fit comfortably
Cons: Expensive, surround-sound feature doesn't work well