I concur that I found Hilde comment interesting. It's always been the ears for me but there is nothing wrong with experimentation and if measurements facilitate that, why not? However in the end the ears have it.
Do you trust your ears more than measurements?
I have a lot of audiophiles that say the ear test is the best. I believe them. Some of us have to do blind tests etc. I’m in the camp of trusting your own ears because no matter how something measures. Is it more pleasing to you with a particular cable, placement tweak etc. What are your thoughts everyone?