The expensive Bryston and Storm units have excellent external UI and channel management software. Consumer units don't come close.
I contacted Storm and asked if they would ever release low channel count units. They said they have been considering that, but I doubt they will go through with it. They have a clear niche, which I don't see them relinquishing.
The other issue is that consumer software is terrible. And it's the hardware manufacturer's responsibility to make sure that Dirac works without problems. Consumer AVPs have a poor track record there.
I have low expectations for Marantz and Denon units performing well. I would very much like to be wrong.
D&M are some of the the most reliable AVR/AVPs out there, IMO.
I've had a perfectly working Marantz SR7012 for 7 years now, purchased brand new as the 7013 came out (inferior unit as it had that can't use Neural X with Dolby sources nonsense on it) for a mere $1100.
It's now expanded to 11.1.8 (plus optional SH and optional 4 floor speakers plus front stage "lift" to gone from the screen using Scatmos, speaker switches and a mixer) for a mere $1800 with none of the Atmos renderer issues (like no Front Wide output for fixed and/or bed objects despite correlated info).
25 speaker home theater for $2900 (3 sub output with Mini-DSP correction using multi-sub optimizer plus seat shaker channel) for a total of 11.4.10.4.
Screw Trinnov and Storm's overpriced crap! Yeah, consumer equipment doesn't come close. LOL. Keep buying into that audiophile snake oil marketing!
I've even got Logic 7 courtesy of a Lexicon MC-1 plugged into the 7.1 inputs of the 7012. With Scatmos expansion it's really Logic 11 (plus front stage lift and the 4 floor ambient speakers taken from the Front Wide Scatmos Surround outputs) has 11.4.2.4 in operation with Logic 7 for truly holographic 2-channel music.
There's also a Carver Sonic Holography option for 2-channel output as well that's particularly interesting in Multi-Channel Stereo mode with some albums.
Books Shade's Dear Future Self and Yello's Point are mind blowing in Dolby Atmos on it (24 foot long room).