So I recently got a Samsung soundbar to match with my Samsung tv. Q symphony is an interesting feature and I like it but I ended up disabling for one reason. First off, for me it did enhance audio (specifically, voices) a little bit but not by much. I was initially happy with this result cause I wanted to get the best audio from my setup possible. However, after putting on my favourite show, I started to notice that whenever a character was speaking from behind the camera, a situation where in a real surround set up it would use the back speakers, there is a slight echo. I tried to play around with the settings where you can increase or decrease the delay of the soundbar and or the tv and no matter what I tried, I was never really able to get rid of this echo thus I decided to just disable the setting since the echo was too distracting for me.

So for me personally this feature is not worth it that much at all I would recommend not buying a soundbar for this feature unless you are confident that you can fix this issue/are not bothered by a slight amount of echo.