I did a LOT of research on active noise cancellation earbuds before finally purchasing these Taotronics, determined to get the best value for money. These consistently came up as the best middle of the range earbuds, so I was thrilled to find them on Amazon Australia. I was a bit nervous about reviews which said that the ANC on these wasn't great, but I can't speak highly enough of them. Sure, they're probably not as good as the Bose QC20's, but they also don't cost $300. In front of the TV at home, the ANC on it's own was fair, but once the music was on I was impressed. Not only was the sound from the TV cancelled, the sound quality was excellent!
But it was in the office when these headphones came into their own. I switched on the ANC alone at my desk and the aircon noise and background keyboard and talking was significantly dimmed - to the point where I would have happily worked with just the ANC. Once I turned on the music however, only a loud phone conversation had within a metre of me, and the noise of a cup thumping loudly on a desk broke through - and this with the sound on extremely low (11-12 out of 100). Colleagues were having conversations directly in front of me and I couldn't hear a thing. It was surreal and fantastic!
Sound quality is top notch - especially for the price. If you need something close to 100% sound cancelling these aren't for you, but they are great for the price and I can't recommend them highly enough.