I have a different view on this Cyril.

.... If quality sound music is truly important for someone, then he/she is not even contemplating a surround sound processor in the first place, but a pure analog pre/pro (Stereo).
If for home theater duties as the main priority, then Onkyo/Integra SSPs, Denon/Marantz SSPs, Yamaha Aventage SSP have an advantage; they are continuously updating and improving. And the more expensive solutions (Bryston, Simaudio, Anthem, Krell, McIntosh, ...) are somehow at a disadvantage here because they would rather drop the Video equation all together as it interferes with the audio quality. ...Plus their various HDMI dissonances ('flagellations').
And the next year you are left in the dust with a $10,000 piece of obsolete audio/video equipment. ...And with some issues unresolved because it needs a new piece of hardware.
If I would truly want a high end surround sound processor in my home theater who also performs the stereo music listening duties, I would probably go with Classe, or Meridian. But the price of admission is higher than couple grands or so too (street price roughly for some great SSPs).
{And you can get a separate pre/pro for your music listening only.}
I am simply giving another perspective here; according to Barry's own needs and expectations, and vision on his personal budget.
Also, most high end audiophiles they do get those Integra, Marantz SSPs with Audyssey MultEQ XT32 and for below three grands.
That new Yamaha SSP is $2,500 (street) or less right now.
Furthermore, nowadays programs like DIRAC are avail from your PC and Mac. ...Room Perfect, XTaC EQ, ....
* I've read a lot about all SSPs (even the most expensive ones), and
Kal Rubinson (from Stereophile) is my main man-to-go-to for those related type of matters. Plus I read a lot too from real owners over at AVS Forum; to find out all the pros and cons from all those SSPs (from roughly $1,000 up to $20,000). ...From audio sound quality, ... to video issues and all that jazz. ...And all in relation to good balanced common sense (financial true value).
Room treatments should be the first acoustic priority in a serious home theater room. ...Then separate Audio SSP (HDMI connections included for the hi-rez multichannel audio), and with separate Video processing.
Go all the way, or simply go the best way for you. ...Just my own view.
<> Money is no object, except only for people who object (not enough sufficient funds in their bank accounts).