Sony MDR-NC60 Noise-Canceling Headphone

Pros:
+ This is the most comfortable pair of cans I've ever tried. The overall fit is very comfortable - I was able to fall asleep on a 3 hour flight. There is absolutely no "suction" effect as I've experienced with another phones I've tried.
+ Both, the cups and the bridge are wrapped up in very fine leather. I read some reviews that some people do not like leather on the headphones as it may cause sweating - I personally never experience that, not with this pair nor with any other headphones I've owned. So, even though I cannot say anything negative about that aspect, I might not be the best judge in this case - some people can be more sensitive then others. As far as leather quality and feel - they are as good as they come.
+ The unique feature of this model is a "monitor" button that allows you to hear surrounding sounds without turning off the NC or taking the cans off. The only comfort comment I have about this model is that this button is hard to find for someone who's just beginning to adjust to this set. As I'm getting used to this pair, though, I'm getting much better at it - minor problem with a design in my mind.
+ This pair runs on a regular AAA battery, illuminating the need to carry a battery charger and having to worry about how to charge it in Europe. This is a big plus in my books. 1 AAA battery gives you 30 continuous hours of NC; if you think that it is not enough - just take a couple of spare AAAs with you - it is still better then a charger, and sure will be enough for a trip to any destination.
+ Overall build is very sturdy, yet easy to adjust to whatever position is desirable. Folds neatly into a carrying case, and as far as "over-the-ear" designed go - do not take much space when folded. Again, if the portability is your main concern - you might want to check out "on-the-ear" designs.
+ Sound quality (again) is one of the best ones I've tried when it comes to NC headphones for travelers. BASS output is very good with NC on and just slightly worse with it being off (expect it on all NC headphones). I'm listening to all kinds of music and these NC's perform very good for everything from Cleveland Orchestra to Jimi Hendrix. That being said, if you do not plan to use the NC feature of the headphones and just need something to listen to your stereo at home - you'll definitely be able to find a better set for less money. Better yet - take this simple test: if speakers for your home theatre system are made by Boss, Sony, or Panasonic - this pair is going to be good for use at home, at work, or on the plane. If, on the other hand, you have Boston Acoustics hooked up to your stereo - you might want to keep MDRNC60 for travel purpose, and for home use pick up a higher end model without NC feature.
+ Noise Cancellation feature works great - definitely better then on Bose QC3 (and I'm not kidding). In my opinion it is the best NC you can get for under $300 - as simple as that.

Cons:
- There is only one negative comment that I have about this product. Carrying case that this model comes with is a softer kind which is a big minus in my mind. I like the hard case that comes with Bose QC3: having a harder case allows you to clip it to your laptop bag, for instance, and not to worry about smashing your headphones to pieces as you walk down the isle on the plane. This case I would not recommend to keep clipped to the outside of your luggage, as you can end up damaging your headphones. Also, as a future suggestion to a lonely Sony engineer who might read this review in his spare time - it would be nice if the inside compartment in the carrying case had enough room to accommodate iPod Video

Pros:
+ Great sound quality (When listening on these, I've heard some parts of songs I'd never heard before)
+ Noise Canceling works well (I have yet to try it on a plane or a train, but I have tried it in a room with a lot of people talking, and it does block a lot of the noise out)
+ The headphones look fantastic
+ There is a convenient button that you can press when you are using the NC feature and it stops the music so that you can hear outside noise

Cons:
- The headphones get uncomfortable after a while of use
- When the NC feature is on and you walk around, a buzzing sound in one ear is heard with every step (It gets extremely annoying, so I only use the NC feature sitting down)
- The carrying case could have been designed better

I'm a huge fan of Sony headphones and favor Sony products in general. To me the Sony MDR-V700DJ are the best sounding headphones ever - especially for bass response. That's why I'm so disappointed with the sound quality of the Sony MDR-NC60 noise canceling headphones. They are very well made and comfortable to wear, but the sound quality is awful - especially when the noise canceling feature is enabled. I recommend a direct comparison with the Bose QuietComfort 2 noise canceling headphones before purchasing these.

Experienced the same vibration problem as others, mine in the left ear. For me, it happened in moderately noisy environment. I was able to situate myself such that the vibration went away, but I find it unacceptable to have to do that with $150 headphones.

Other than that, the sound and comfort were very good, passive noise cancellation was excellent, and active noise cancellation was very good as well. It's unfortunate that the vibration was so noticeable, as these are excellent headphones otherwise.

I bought these to replace my NC50s (since they fold and are easier to carry). I think the noise reduction is superior to the 50s, but two separate units both had the hum that many other reviewers have written about (I returned both). You can't be sure that you will get a reliable pair, so avoid purchasing these. Sony, you really need to rework this model and eliminate what is a pervasive problem!