So I've had a few weeks now to test out the 720. I continue to love this thing more every day. I went and watched Quantum of Solace which I've seen numerous times and I'm picking up sounds that just weren't there before with my previous receiver. I'm not sure if it's the clarity of sound coming from the 720 or if it's attributable to the upmixer, but it's so much better than before. The neat thing I'm finding about the Dolby upmixer is that the ceiling speakers add real depth to the musical score and ambient noises, but the vocals still remain set to the front sound stage. There has been the odd time where that hasn't been the case and it's sounded weird (like a voice in a hollow chamber in front of the screen), but that's been few and far between. I think I'm starting to get used to sounds coming from my ceilings so it seems subtle unless I'm paying attention to it, but I think that if I were to go to back to 7.1 I'd switch back right away. As I typed that I decided I should probably go and set my config 4 to just 7.1 and switch back and forth between that and 7.1.4. I'll post back but ,seriously, Atmos and DSU is the real deal.
Gear: The Brains: Anthem MRX 720. The Brawn: Outlaw 7700. The Fun: Custom PC w/ Logitech 27 & reverse mount pedals, Nintendo Switch, Playstation PS4 Pro. The Visuals: Oppo 203, Darbee Darblet, Optoma HD3300, Panamorph UH480, DIY 138" Curved screen using Semour Centerstage XD AT material. The Audio: 7.1.4: LCR: Tannoy DC12i. Sides: Tannoy IW63DC. Rears: Tannoy DC8i. Ceilings: Tannoy CMS 603/601 DCBM. Subs: 3X Micro Marty and 1X Full Marty.