Compared to my 3 year old wired soundsport with one ear working (which still sounds pretty good imo) the bass on the QC20s is much higher. There’s not too much sound leakage so I can listen louder without worrying about people hearing my earbuds leak. The noise cancellation is great even when I’m using my old soundsport wingtips (which are compatible with these) that don’t directly clog up your ear canal like everything else. It’s definitely an upgrade or my old ones just deteriorated, because on the QC20s I can hear parts of the music that I can’t hear on my soundsports. The cord on the QC20 is a bit thicker than the Soundsports except for the small cord that connects the power source to the aux. That part kinda scares me so I’ll treat it with care. Probably not my preference to have the little brick thing lugging around but it’s what makes these earbuds sound like headphones. You can opt to use the earbuds with the brick thing turned off but it’ll just sound like cheap earbuds. Overall though, great upgrade and probably the best currently made wired earbuds for me, especially since I can use my old wingtips on them.

This head phones have a good sound quality, but it is much better at noise cancelling Although I would make some changes and make it more rugged and the connections at the components somehow stronger because they are the weak points to this headphones. And they create sound failures and breakage and ripping points.

Excellent product. I've tried many others but to no avail. Bose product is what I expected, and more.

Great sound and without external noise, you can hear music in its entirety.

I also have the QC15 which I've owned for a couple of years. They are great however on my last plane ride, which was a red eye, they were so bulky and uncomfortable to try and sleep in so I looked at getting something more lightweight but still offered the same high level of noise cancelling. These fit the bill perfectly. Super lightweight and comfortable. The only thing I don't really care for is the big dongle hanging from the cord which controls the noise cancelling but I can deal with it. Are they expensive? Yes, but they're worth it to me, especially on long trips. I also like that they don't take up so much room in my luggage like the QC 15 with it's large case. Overall very happy with the purchase.