I posed a question regarding this on a different thread, but it's worth repeating here - and it deals with the source material for surround sound, as mentioned above. The Dolby Atmos product Apple is selling is an upmix from the 2.0 source, correct? They're not full-resolution surround mixes from the original multitrack masters, right? I've done some A/B testing, and the Apple product is not even close to, say, Fleetwood Mac's 5.1 DVD-A of Rumours - or the more recent Atmos anniversary release of INXS's Kick. On those albums, the engineers remixed all of the channels separately in full resolution from those original multitracks. Please let me know if I'm missing something in my settings.