Keep in mind that when you use a DSP such as "concert Hall", it kerfutzes with the signal. For a VALID comparison, make sure you use the same options for each trial.
Personally, to test the quality of a pair of speakers, I prefer to use he plain vanilla two channel stereo mode with no DSP.
most music is two channel and, IMNSHO, should be played back as such. And, if the source is multi-channel, then I'll go with the corresponding setting. Again, using a DSP invalidates any true comparison between the two systems. You're listening to that, not through it.