FWIW you have to ask yourself what do you prefer. I for one has gone from 2.0 to 2.1 to 3.1 to 7.1, back to 2.0 and finally settled at 7.1. I started investing into gears seriously somewhere around 2004. The journey has been difficult. Most people said stereo is best and AVRs don't sound good, not enough power, etc, etc. I kept on changing my setup. Had a brief romance with tubes, then divorced and again remarried, etc. So I have figured that everyone listens to music differently. Their opinion may not match yours. Over the period I figured out what I like the most and below is the gist of it
1. Instruments should sound real. Most amps fail to produce enough dB (especially the tube based IME) in the high frequencies. Especially metal or wood striking metal. The shimmer and decay is subdued. Once you have this, the 7.1 sounds sublime for me.
2. Genre of songs. If I listen to Hindi, It is always songs before the 80s (50s, 60s and 70s). Just handful of songs from the 80s and not a single song from 2000 onwards. Mostly it is Jazz, Oldies, Rock, Hard Rock, etc and Western Classical
Everytime I listen I look for spaciousness of the music and the top end. In the end I found out that I enjoy my AVR in 7.1 mode much more than all my other amps and this is what has been my main setup for the last 8 years or so. And Yes, I got nirvana with my AVR only after doing the YPAO setup and some amount of sound treatment. In 7.1 mode I get a very large soundstage. The instruments are crisp and clear. I do lack a bit of bass but getting that will probably be for another day when I get a better subwoofer.
3. I have also expermented with sitting position, recliners, etc. At the moment what I find most comfortable is the Amazon Basics zero gravity chair. But more than 3-4 hours on a chair, recliner, etc becomes uncomfortable. So at the moment I'm trying very hard to get the right kind of sound from Headphones. Though Headphones provide clarity and with proper headphone amp you get all the instruments, vocal clear, there are two things that I think are impossible to get in Headphones. One is the bass, the kind of bass that hits your chest and the other is the attrocious soundstage where all singers and instruments do their thing and create a cacophony inside the tiny head of ours. So I'm back to listening to music in 7.1 lying on amazon basics chair with a glass of whisky on my side and a raspberry PI streamer with a LCD screen that displays artwork and a TV playing visualization of the music being belted out from the speakers.
So your journely could be different. It took me a long time to get the speaker placement to my liking. At the moment my room is extremely crowded and messy, but I get the sound I love. Once you reach that stage, rest all becomes secondary.