I purchased these a few months ago and I am so pleased that I did. The sound quality is excellent and included in the package are several sets of different size ear fixtures so the earbuds fixs perfectly in different types of ear sizes. The APP that controls the earbuds is awsome. You have total control of the earbuds and its different function by just taping either side of the earbuds.
I bought the QuietComfort Ultra 3 weeks ago. The noise canceling and the sound are top of the line. They are a little difficult to get out of the case. The biggest issue that I have is the volume while on a phone call will nor go up. I have several different models of Bose and all of them will allow the volume to turn up on a call but not the QuietComfort Ultra.
The QC Ultra earbuds are a significant step above any other earbuds I have owned, even considering other offerings from Bose themselves. The sound quality is well beyond what I expected, and the spatial audio feature is truly immersive. Fantastic earbuds, I have heard none better at any price.
I bought and the sound is a game changer. The fit is also much better than other earbuds I have tried. I am a runner and sweat a lot, so shortly after one run, there was an issue with a static sound in left earbud. I don't know if it is from the sweat, but BOSE support is amazing and is sending out another pair. I hope it was a one-off otherwise I will have to shop around, again (sigh).