I’ve been using our new Bose QuietComfort 3 headphones for a few months now, and they’re pretty good. They deliver solid sound quality and very good noise reduction.
You should not, however, buy them. They cost a whopping $350 (I was given a set as a gift).
There is no doubt that they are good headphones, but they are nowhere near worth the price. And the patented noise-canceling technology they use does not, as one might expect, cancel all outside sound; it cancels noise only. I understand that it would be an engineering miracle to cancel all outside sound, but for $350, expectations are pretty high.
My point is that if you are search of a new headset, find a good one for under $50. I’ve been using the Sony MDR-XD200 for a lot longer and the sound quality is just as good as Bose’s. And guess how much it cost me? 20 bucks.
Note: Bose also has QC2s which are slightly cheaper ($300, I believe), which have the same level of quality and noise-canceling, but are of the large, ear-cup variety, not the small travel kind used in the more expensive counterpart.