I'm using a 2018 model-year Samsung 4k smart TV. I'm pretty sure it's running Tizen OS and it's surprisingly good. I'm doing sound out via ARC to a Sonos Beam in a 5.0 with the IKEA/Sonos speakers as rears. So far my only complaint is that the Tizen Plex app doesn't play nice with DTS audio even though the TV has a native DTS decoder.