I hope to save many of the readers some time when looking for a great sounding, compact, bluetooth wireless set of headphones. These are the ones. I really like to listen to quality music and have about $15K of equipment my home system.Rearch: I bought my daughter some black Beats Solo 3's for her birthday from Costco and of course she wanted another color from Best Buy so I decided to keep the black ones. After listening to them for a week or so I really found them uncomfortable and the sound was not great. My ears sweated and the bads "stuck" to them. The sound was nothing to note. Kind of flat. Admittedly, I am using my Samsung S7 for a source. I returned them.I then picked up the Bose On Ear Wireless Soundlink headphones. They are comfortable and very compact. That said, they do feel a little like ear muffs as they really do sit on your ears and have foam in the center. I kept playing with the settings on my phone trying to get more separation out and vivid sound out of them. They just sound muddy as some others have described.So, after watching the documentary on The Avett Brothers I noticed they use Audio Technica in the studio shots. I tried to find a retailer that carried the SR5BTBKs locally. No luck. I ordered them on Friday night and they showed up this morning. Testing so far: with high res setting on my phone for audio: Diana Krall (various songs), Pink Floyd, Khalid (off my daughter's playlist - this kid Khalid is really good), Wes Montgomery, Neil Young and some Dave Brubeck. Listened to the same music with corded hook up as the directions say that is the way to get high res. Bounced back and forth between the Bose and the AT's. The result: The Audio Technica blow the Bose (and for that matter the Beats) off the map. Even though they are on ear, they almost hug your ear instead of pressing against them. Very comfortable and not "ear muff like" like the Bose. They are not as compact as the Bose really fold in and these just turn to lay flat. I think there is more sound leakage than the Bose but not much. Sound w and w/out blue tooth: Bright, vivid, nice separation but also have a sound stage. The Bose almost sounded like a mono recording which is fine if that is what the source music was recorded. Some say the AT's are too bright. I disagree, they are vivid. Do they have bass? Yes, Khalid sounds great. They just reproduce the music like it was recorded. You just notice things that you didn't on the others. On Wish You Were Here, you hear all the sniffing and moving by David Gilmour but then you also hear his fingers changing position on the strings. Not changing between chords but actually moving on the strings to get in position.I am very happy with these. I think the ultimate stamp of approval is that I just keep reaching for these to listen to another song. The Bose sat on my desk for weeks. Also, my wife put them on for about 10 seconds after listening to the Bose - same song from Diana Krall, put them down and said "those sound much better, I hope you still have the box for the Bose so you can return them"