Please, stop saying that " we don't here the same and we have different tastes in sound quality" If this is the case, how come we agreed on the best sounding music halls around the world? How come we agreed on the best sounding recordings from LP, Master tapes and even CD's?
I think the core statement is provable. With age, gender and individual exposure we all have measurably different hearing.
On top of that, we have very different choices in music, and listening habits and our pleasure centers are trained by our past.
Listening at low volumes vs. concert levels is a very different thing, and we are right to want to judge our speakers based on that alone, not to mention music preferences.
Oh, and then there are rooms, and amplifiers. Both of these can make a significant difference in the sound.
So, the truth is we do not here [sic] the same and we do have very different tastes in the experiences we wish to have.
Best,
E