@2psyop - totally agree.
Generally, neutral means sound without additional coloration. Warm can add a rich/lush/laid-back/smeared character. Cold can be too fast/bright/harsh. Neutral is more like "accurate". However, "sterile" means it could be too clean and not any bite/grittiness and also it can mean dull / uninteresting - the sound is just not engaging.
Your Eric Clapton video is the best recording out of all, but I love Johny Cash as well.
Jazz is my primary listening when I'm working or at the computer. I love Melody Gardot. If you like jazz, get her Live At the Olympia bluray. It is the absolute best recording of her (as well as the best jazz live recording I have heard). The Youtube videos do not compare at all.
https://www.youtube.com/watch?v=Jb3lTVL7qM8
https://www.youtube.com/watch?v=9NrNI9Qr-KE
I also love Diana Krall, Lyn Stanley, Jane Monheit. If I'm not listening to jazz, I'm actually listening to metal. lol.