I'm new to Sonos.
I just received and setup my Sonos Beam, Sub and 2x Play 1s yesterday. I have a small / medium apartment. I had been using an old cheap 'home theater in a box' sound system that wasn't very good. I'm not much of an audiophile at all. I just like sounds to sound good to my ears. My use case is all streaming content from my AppleTV to a 43" Sony Bravia. Movies, television and music.
After much research, I went with Sonos for it's ease of use and setup. I didn't really need a high end audio system. Or one that had too much power for my living space.
The sound is glorious :) I had it setup in about an hour. Tuned, adjusted the Sub down a bit as it's a little boomy in here.
Apple Music - I have a wide and eclectic taste in music - I was pleasantly surprised how good it sounds.
Television - Netflix and other services that can broadcast 5.1 surround come through very well. Hulu - only broadcast in stereo - so the quality is still good, but only through the Beam. No surround, no sub. That's all on Hulu from what I've read.
I had thought of just starting with the Beam, but after a day of use, I'm happy I chose to get a Sub and the Play 1's. By itself, I don't think the Beam would have sufficed for movies.
I hope my experience helps out others searching for info.