When someone reports hearing something (whether it be prickliness, plankton, sound stage, weight, forward, recessed, whatever) that is by definition their opinion. Audio is subjective. The signal is not, it's electrical, but hearing and perception of audio is acoustic, and is subjective and dependent on ambient listening conditions and on the listener. Are there some phenomena that are generally perceived by most users and can be called "generic characteristics"? Yes, such as loudness. But even those are not 100% universal. What I hear will be different from what you hear will be different from what Joe and Jane Blow hear, and what each of us perceives is our "truth." I don't like the sound of Onkyo products. Others do. Simple. That is how human perception works. Arguing anything different demonstrates lack of understanding.