I just watched Johnny Mnemonic and Jumanji Welcome To The Jungle in Atmos and compared some heavier overhead parts in Auro-3D. Using an extracted middle, again, they sounded almost identical in those scenes. Regular Auro-3D basically is 5.1.4 with optional CH/TS channels that phantom image just fine at the MLP and center positions. Extracting a middle gives you essentially 5.1.6 (not counting my matrixed front/rear wides, although the latter does stretch the sides 2/3 into the back of the room, which combined with rear heights (all of 4 feet away) sounds hella similar to 7.1.6 from the MLP. Oddly, my switchbox lets me change Atmos to 5.1.4 quite easily at which point it REALLY DOES sound virtually identical (if there are any differences, I'm not likely to notice them).
All in all, short of a few Auro only titles (Red Tails and several music titles), I'd have to agree at this point with Sal1950. It's not really worth bothering with it when Atmos alternatives are readily available that sound either very similar or slightly better due to the rear bed surrounds (Johnny Mnemonic does have rear bed surrounds, but only if you have a fully supported 13.1 setup whereas it only needs 7.1.4 with Atmos to do essentially the same damn thing).
I also watched The Dark Tower in Auro-3D (I only have that one in Auro-3D). Strange, but kind of fun movie. The sequence at the end probably lit up the overheads more than any single scene in a movie thus far (it sounded like a "river of sound" flowing down the middle of the room (a bit past halfway in true Auro mode with just side surrounds and stretching into the back with extracted middle + rear heights). It wasn't just a "lite" phantom image (which sadly is mostly what Starship Troopers and The Fifth Element provided in their Atmos version for ceiling effects). It was lit up like a Christmas tree full blast. Pretty cool. It's not that The Fifth Element had a "bad" soundtrack, it's more like the Atmos version didn't differentiate itself enough from the previous one, IMO. With all those guns and spaceships, it should have been a blast. Sadly, it was far more subdued for overhead/rear use than I would have thought. I can't help but wonder if it I would have liked it better upmixed with Neural X instead.
I'd say the most amazing sounding "immersive" movies I've heard thus far are:
1> Jumanji (the original; way more impressive than the sequel for Atmos sound effects).
2> Harry Potter movies (virtually all of them in DTS:X have tons of believable overhead effects)
3> Crimson Peak (DTS:X sounds coming from everywhere in the room)
4> Red Tails (Auro-3D only; TONS of overhead flybys in every which direction during the movie)
5> Blade Runner (the original in Atmos) ; 2049 was the better movie, IMO if a bit drawn out, but the original goes for much stronger overhead and rear effects, IMO. 2049 was good too, though
6> The Meg (remuxed Atmos with 3D visuals, this was a GREAT fun movie with loads of overhead effects, especially when they were under water).
Some of the ones I thought were overrated I've seen in other lists include The Matrix (hardly any "strong" overhead sounds by comparison to the above), Annihilation (lots of weird synth noises all over the place, but few sounds that I'd actually "want" to hear. I kind of hated those synth noises, really) and Saving Private Ryan (very poor "side" surround when I tested it; everything seemed front/back for the most part with some overhead, but it felt less like a "bubble" than a tunnel somehow. Others like Labyrinth were just plain boring in Atmos (mostly reverb in the surrounds like the original soundtrack).
Sadly, I think I've heard more "immersion" from many 5.1 and 7.1 movies upmixed via Neural X than some of these "unaggressive" Atmos soundtracks. I know some don't want surround effects to be "distracting" but come on. I spent thousands to hear 17 channel surround sound. I want CRAZY surround! Too many soundtracks just don't cut it, IMO.
Click THEATER (Updated: Nov-12-2019) for pics: Epson 3100 3D Projector, DaLite 92" screen, 11.1.6 (Marantz SR7012 + Yamaha HTR-5960 + Onkyo ESPro) - Dialog Lift - PSB T45/B15/S50/X1T/CS500 Speakers & Def Tech PF-1500 15" sub; 2nd Room (Updated Apr-22-2019): 48" Plasma TV, Carver AL-III, Carver C-5 Pre-Amp, Technics SH-AC500D, Dual Carver TFM-35x Amps (Active Bi-Amp), Klipsch Surrounds ; Sources: PS4, LG UP875 UHD, Nvidia Shield (KODI), ATV4K, Zidoo X9S, LD, GameCube
: Props (Updated 11-01-19)