content: I've owned my pair for close to four years now and they are starting to physically deteriorate. The sound quality is excellent, as is the noise canceling. I used these in an office cubicle environment and later in a computer room, and the performance on my iPod is outstanding. But at this point the plastic upright on each earphone has broken and needs to be held together with wire ties, and the rubber cover on one of the ear pieces has worn through. Granted, I use them almost every day, but they don't see rough use - and this isn't the type of endurance I'd expect from a $300 product. The two year warranty isn't long enough to address these issues.UPDATED JANUARY 2009One of the ear pieces finally cracked at the pivot point and simply fell off. When I contacted Boise they did offer to replace them with a new set for $100.