I have the Roku Streambar only no other speakers. In TV settings under digital audio output I have a option to pick PCM or Dolby Digital. Both options work but by just using the Streambar and no other speakers what would be the best option to pick? I know Dolby works best with surround sound in home theater. And PCM is most popular used but since the Streambar supports both of them I would like to know whats the best option is using which the Stream bar? Or because I am just using the Streambar and not a big speaker set up would I even tell the difference between PCM and Dolby?