I recently purchased the Sony Theatre Bar 9 with the SA-RS5 Atmos Surround Speakers and SA-RS5 sub.
Easy to setup, the phone app works well and the system sounds fantastic, especially when the Atmos speakers and sub are connected. They connect to the soundbar wirelessly and I haven't had any disconnects or sound drop outs, it all just works.
Normal TV viewing sounds good, Streaming Apps sound great, my Playstation 5 sounds fantastic and Blu-ray / 4k discs sound amazing, especially discs with Dolby Atmos or DTS X tracks. Very happy with the system overall.