I know this is a "up to your ears and priorities" type question, but hoping to get outside of my own head here...
I'm a long time Sonos fan (Play 1s throughout the house) with an AVR/traditional home theater and Sonos Connect. I have a true 5.1 set-up with a Sony STR-DH710, a 10' Sony sub and some hefty Sony bookshelf speakers (bought about a decade ago). It can crank out crazy volume (definitely more than I need) and has always sounded great to me. I used to watch a lot of physical media (including Blu-rays) but not so much these days (mostly streaming and TV). I use a Tivo, Xbox One, Apple TV and Roku.
I live in a small apartment (living room is about 15x20) and am starting to think this set-up is overkill and the dream of getting a house where this will live as a dedicated HT is dwindling. The big speakers (especially the L/R large bookshelfs and big center hanging over the TV) and wires are an eyesore, and it's a little inconvenient to have to turn on the receiver and control the volume with the remote whenever I want to use the Sonos Connect.
I worked for Sonos a few years ago and heard a prototype of the Playbase and remember being blown away with the sound that came out of that small package. Have not had a chance to hear the final product yet. I've recently come into some extra money and am thinking about treating myself to a new toy (and making the wife happy) by selling off my HT and getting a playbase, sub and two rear Play1s. It will be more convenient, better work with the rest of the Sonos system and a MUCH better eyesore. I'm also struggling these days to regulate volume for late night apartment watching between dialog and action scenes.
The thing I'm struggling with is how much audio fidelity I'll lose with no DTS, Dolby and DTS HD, smaller speakers and less separation in the L/R/C channels. I know I won't lose any low-end because I'm very acquainted with the ridiculous sub. But I am worried my movie watching experience will suffer significantly.
Assuming money is no object, how would you feel about going all-in on Sonos if you are used to a true, halfway decent 5.1 AVR setup?