I received these headphones around 6 weeks ago now and I have to praise them for their soundstage quality and the various options available which can be setup to your own preferences through the mobile app. I have been using Bose SoundLink ll wireless headphones for a couple of years now and they are pretty much redundant as they can't match the sound quality of the XM4's, especially if you play music using Sony's LDAC codec. Noise cancelling is top notch when you need it and some of the other options are great to use while out and about in the community. These headphones are money well spent if you're looking for premium sound with nice extras and quality build.