Yup. I also vote ears. I also try very hard to describe what I personally hear but ultimately it's the verdict of the person's own ears and sound signature preferences.
All of us have different ears so it's best to judge with our own measurement system. It's the best one we own for our own personal preferences.
Interestingly enough, even dummy head manufacturers can't settle on "standard" ears much less on how to make them. I have been reading about this for the past 3 years or so in an effort to make a nice binaural dummy head. I have even gone as far as to watch an actual human head be dissected little by little and guess what? I have seen 6 different dissections of 6 different human heads and none of them had the same shape ear and interestingly enough as well - none of them have the same shape ear canal. This all affects the way we perceive sound.
I once had a Bose employee at a fancy store in Newport Beach, CA show me some charts about how good their stuff is. Ever since then I have been of the belief that measurements and charts are for people who can't listen.