QC15 allegedly has the best noise cancellation, but it didn't block out the sound of people talking or even birds chirping outside without music playing

That feeling of a slight pressure is still there, but there is no significant noise cancellation anymore.

Clear, deep tones, excellent noise canceling.

Very comfortable, great for noise reduction and clarity of sound, Recommend!

These are the best noise canceling headphones I have ever had.

I live on a busy streetAnd the noise can be bothersome when sitting on my deck.

Noise canceling feature works as described very well

The noise cancelling works very well, can be enjoyed on an airplane without any problem.

They charge pretty quickly, and last for very long flights (didn't charge it fully and it lasts for a 14 hour flight from Japan).Cancels general annoying noise, like all airplane background noise the actual plane makes

Pros: Compact size for travel, light weight, effective noise-cancelling, excellent overall sound for music, comfortable

Excellent noise reduction- adding significantly to the comfort factor on long flights

If you put another name on this product and try to sell it to buyers at this same price, I don't think it will awe or move people (or be recommended by them) in spite of its outstanding noise cancellation and audio quality performance

What I like best about these is that having something smaller that fits on the ears means that I actually get really good noise canceling without turning them on.

Top notch headphones for cancelling unwanted noise

That being said, I did a lot of research on the best noise cancelling headphones and was pretty convinced that these met my needs before I even ordered them

These are excellent noise cancelling headphones

As of this writing, I have not allowed for the traditional 40-hour "burn-in" period but I have to confess these BOSE QuietComfort 3 headphones give me an excellent listening experience, lightweight & adequate noise-cancellation

Excellent - just stunning sound and no back ground noise

The noise cancelling works great.

Excellent - just stunning sound and no back ground noise

Sennheiser HD 202 II and the Senn's are just passive noise isolation

If you're an average person hoping to find a quality product that will sound great while blocking extraneous noise these are a solid choice

Great noise canceling and sound for music, but the volume is lower on the right side than the left side

Whether it's riding on a plane, killing the background noise in the Dr's office or just having quite in the midst of chaos, these are great.

I saw one review that said they only worked as passive noise cancellation.

it's very effective noise cancelling headphone

Noise Reduction and comfort can't be beat

Overall, these are overpriced headphones considering that they deliver both mediocre noise canceling and sound quality

Good thing I love about this technology is that it gets rid of annoying bus noises, humming noises from kitchen and stuff while it still let the sound of someone calling you or other noises that may save your life

Great noise canceling

Extremely comfortable, great acoustic noise cancelling, and fantastic sound quality

The headphones block out alot of background noise, super comfortable and the music quality is very good

I just wish there could be more perfect noise sealing.

QC3 are capable of filter noise up to 80% though you can still hear people talking around

The noise canceling feature worked well

Comdy, sounds good, great noise cancellation but the earpads kinda suck (see pics)

Superb noise cancellation

Noise cancellation technology, a principal Bose feature, removes even the loudest noise, offering a calm and soothing environment

Comfortable, Quality Sound and Excellent Noise Cancelling

Great noise canceling and sound for music, but the volume is lower on the right side than the left side

The noise canceling works

No regrets here, one of the best noise cancelling headphones that does not irritate your ears when worn for a long time.

Compact, easy to travel with, good noise canceling

Compact, easy to travel with, good noise canceling

Great sound quality and good noise canceling.

Used primarily for noise cancellation, which works very well.

I would recommend this to anyone who wants a good noise cancellation headphone

Light comfortable and work great, just spent 4 hours in flight with screaming babies and watched 2 movies on my i Pad and these headphones gave me great sound and no outside noise.

These are the best noise cancelling headphones out there, so don't worry about finding better ones

Comdy, sounds good, great noise cancellation but the earpads kinda suck (see pics)

Having read quite a few of these reviews, it is clear many owners were as ignorant as I of the lifetime replacement guarantee