the best i can do is use words.....
'could not hear any consistent difference'
'barely perceptable'
'very slight'
'slight'
'very subtle'
'subtle'
'solid'
'not quite profound'
'profound'
'jumps out at you'
'night and day'
'a week later i removed it and had to immediately put it back'
'made me smile', 'listened until 3am', and the always popular 'better than sex' (which i've never used).
This I think is as far as we should take subjectivism. The article went far beyond which causes the whole camp to look bad in process as folks paint with a broad brush.