Both the noise isolation and the active noise cancelling system are excellent. Being on a bus or plane with them is a treat. I wear them when I mow the lawn and I can barely hear the mower. I find I don't have to turn up the volume as much as regular headphones to blank out background noise.

The Bose QuietComfort 15 are amazing, without the money it delivers a full range of sound quality and have amazing sound cancellation, these are perfect for road trips, plane trips, or just a normal day,even though they have a heavy price tag of $300 USD it was worth it.

The QuietComfort 15 are the go-to headphones for travelers, offering powerful noise cancellation, rich audio and long battery life.

Excellent noise-cancelling performance; Loud; accurate audio; Comfortable fit; Long battery life

Expensive; Music dies when battery dies

I've been using these for a while now. I'm re-discovering my music library and hearing new things! Great quality...but I'd expect that, given the price paid and Bose name. My wife says she's become a "Bose widow"! Ha! There is a certain 'feel' to get used to when you turn them on.

Bose is the best-known name in noise cancelling headphones, bar none. Step onto a train anywhere in Greater London on a weekday morning and you're like to see a pair of them, probably aboard the bonce of a suited gentleman.

Extremely comfortable; Very effective noise cancellation

Give give a strange pressure effect on ears

The QuietComfort 15 are Bose's top-of-the-line noise cancelling headphones.

Fantastic noise reduction; great sound; very comfortable.

Bulky; Pricey; Requires a AAA battery at all times

These head phones are only good for people who travel or work in an office and want to remove background noise. Which they are great for, but you can't even walk down the street with them on. The sound cancelling to stops everything and you cut get it cutting in and out.

Commuting is a state of mind thing. It can be a necessary evil, or it can be a period of calm where nobody bothers you. I try to make my commute the latter - two hours every day where I can do my own thing without anyone expecting me to do something for them.

Excellent noise cancellation; good sound quality

Bulky to carry; very expensive compared to passive headphones; useless without a battery

Nothing beats Bose QC 15 as far as notice cancellation is concerned. Pricey, yes, but those who want the ultimate, should get it.

Lightweight enough for hours of listening on an aircraft with no distracting aircraft noise.

Comfortable; Good Noise Reduction; Great Sound; Lightweight

Cord could be sturdier