I've seen so many of these discussions. End of day, if you can't hear a difference, you are in the wrong hobby, and you are wasting your $$.
Some of us DO hear profound differences, sometimes sublime differences, and as we can afford to burn money on this hobby...we do.
Discussions like these are like arguing the best flavor of ice cream, or the 'best' color.
You need to listen and decide for yourself. And, I've found it best to not think about it too much or read too much into reviews. You have to listen. And, if you can't hear a difference, you are in the wrong hobby, and you are wasting your $$.