I've used Sonos since the introduction and like the sound/expandability/flexibility.
It works well with Alexa for music and I use the optical connection for the TV.
It is on the expensive side but there probably lower cost options.
You can start with just the soundbar for TV.
Add a subwoofer for first step home theater.
Then 2-4 speakers for surround sound.
It's easy to add additional speakers in other rooms or the Lanai.
They have a portable speaker you can move around as desired.
Sonos | Wireless Speakers and Home Sound Systems