Not yet experimented with Auro or Atmos but I have several Ultra-HD 4K Blu-Ray movies with Atmos. For now they get defaulted to Dolby surround.
Surround is a great experience, but for music I prefer music that is itself already mixed for surround rather than tack on an artificial layer of DSP processing which creates a surround (it does this well, mind you, but it doesn't serve the art very well) which is not what the artists/producers intended.
My canonical surround audio are the multi-channel DSD music that I have, including this, which was
re-worked specifically for surround by the Legendary Bob Clearmountain, who actually also worked on the original album, so he knows the material very well:
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So, while I can turn on my SS amp's DSP and make any song in a surround experience at home (and I did this a few times when I first got the amp and got my 5.1 set up), it is a bit of a gimmick, I vastly prefer surround from the material itself. For that reason, I am unlikely to do the same artificial conversion to surround with Auro 3D or Atmos or any other technology.
If music material starts becoming common specifically for these new technologies that will be another matter. So far though, surround is unfortunately not as widespread as stereo (ah ah ah), so I don't have my hopes set too high.
If you haven't yet heard 'Avalon' in surround, Run, Fly, Fight, Swim and get it!