This is a quick picture and I still have lots of work to do. We moved last year and our living room from the previous owner has things squeezed in a corner on one wall next to windows. I need to redo the wiring and install multichannel (7.2.4) with the system oriented on another wall. There are some limitations I am going to have with surround placement, but I think it will be enjoyable.
For now, I just upgraded my LCR from Aerial Acoustics 7B & CC3B to KEF Reference Meta 3 & 2. The information from Amir's ASR forum, Erin's Audio Corner, & direct from KEF via their participation on this forum, technical papers, & YouTube interviews were much appreciated. I wish more no nonsense information was available and accepted 30+ years ago (somewhere I still have a bunch of Audioquest cables and green painted CDs).
We have a pair of in ceiling surrounds (unknown speaker) from the prior owner that I've connected for now. Those give us a 5.2 temp system (Rythmik L22 subs). All I've done is an Audyssey cal below 350 Hz with an approximated Harman curve and sub level tweaks. When I redo everything I will learn more about REW to do a more thorough setup (I need to find my USB mic).
I'm using my existing Denon AVR-X8500HA for now. I want to see what happens with Dirac ART over time and will likely change receivers when that is available (I won't be buying a new one in hopes of a future upgrade path). Our main source is the Apple TV for music streaming Apple Music & various video services. I still need to hookup our disc player after the move.