Helpful Customer Review from Amazon.comReview: Bose QuietComfort 3 Acoustic Noise Cancelling Headphone
I have used the Bose QuietComfort QC-2 headphones for about a year, and have traveled to Asia over 5 times with them, and domestic travel as well. About 120 hours of air time. Never took them off. Vastly reduces my jetlag. A pleasure to own and use.
On an impulse buy, I bought the QC-3's after a demo at the local Bose store. 30-day return policy. Compared them side-by-side... both on the airplane, home, with and without sound.
My impressions (your mileage may vary :-)
Noise Cancellation:
The QC-3 has impressive noise cancellation, I think it's incrementally better than the QC-2. Perhaps it's a little too 'aggressive'. Let me explain. I feel a little uncomfortable from a (perceived) pressure on my ear. Note: this is not physical pressure from the ear-pieces, nor is it air-pressure, but rather a physco-acoustic result of noise cancellation. I felt this only slightly with the QC-2's. Bose did an amazing job of noise cancellation given the challenges of an "on-the-ear" design which offers less physical noise isolation due to lack of cups. Everyone has a different tolerance to this pressure, the only way to tell is to try them out. Vote: QC-3 for noise cancellation, QC-2 for comfort (again, will vary from person to person).
Audio Quality:
Using MP3's encoded at 192 kbps, and CD audio, the difference in the two headphones is clear (excuse the pun). The QC-2's are brighter sounding with adequate bass. The QC-3's are a little heavy on the low-end, to the point of sounding muddy. Vote: QC-2.
Construction:
Some have complained about the QC-2's breaking at the stem that attaches each earpiece. I never had this problem, but I am also very careful, especially given their cost. I did notice a person break a QC-2 on the plane trying to turn the earpieces to hard. The build quality of the QC-3 is about the same, the stem may be somewhat narrower, so they could be more prone to breaking, however I do not think it's an issue if you treat them with respect. Vote: equal.
Comfort:
The QC-3's are lighter, but I still prefer the "over-the-ear" type of headphone. They feel like they stay in place better. I would be upset if the QC-3's fell off my head while loading luggage in the overhead bin, only to have someone step on them. I never felt that could happen with the QC-2's. I also would rather have a little physical pressure around my ear, instead of on my ear. Vote: QC-2.
Accessories:
The QC-3 has a less complicated jack that attaches to the headphone (it's detachable, just like the QC-2's). The QC-2 has a hi/low volume control on the jack stem, while the QC-3 has no adjustment and is adjusted somewhere in between (which is why they are not quite as loud as the QC-2's, given the same volume setting from your MP3, DVD, computer, or stereo). The airplance adapter does serve to attenuate the audio further, if needed. The QC-3 carrying case is a little smaller than the QC-2, but not a significant difference. The covering on the QC-3 case is smooth, which I prefer over the QC-2 case. I do not like the way the QC-3's fit in the case, the ear-pieces do not sit firmly where they are supposed to go. With the QC-2, you know exactly how they fit in the case, it just seems like a better fit. Vote: averages to equal.
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