Hi all , just got a new TV and I have a beam gen 2 and 2 One SL surround speakers with sky+ hd , my TV has an eArc setting in the sound menu , if I select this everything is fine but Sonos app shows different formats that it's playing , shown in the pics , which format is better to use Dolby digital plus or Dolby multi channel pcm 2.0 was itv 5.1 sky movies ? Many thanks