Without speaker acoustic disappearance, the illusion falls apart.
That review is for the M100v3. The v4 has the OMG! tweeter and multiple other improvements to the M100's polar response curves.
With regard to the scorecard, you might get more intelligence from what the reviewer did and did not write.
One tip regarding the M5: experiment with stand height before committing to a design or purchase. I, and at least two others on this board, have found dropping the tweeters at least 6" below the ears results in holographic soundstage and imaging with no speakers to be heard.
One more thing: there are members on this board who have made their M80s and M100s disappear even though I could not.
