Here is Stereophile's music writer/reviewer (Tom Fine) that also believes what I been saying about the best CD's being the first release issues being uncompressed and sounding the best, and the later issues being "crunched dynamically" and says it here with the Crosby Stills Nash and Young Déjà Vu album
"The first CD is the original album, sourced from the original tapes. Chris Bellman at Bernie Grundman Mastering used a light hand at the mastering console and kept the original dynamics and tonal qualities. It's superior to the two prior issues on 5" shiny plastic: It's not so much that they were stereotypically bad CDs (although the 1994 reissue, made at the dawn of the awful Loudness Wars, is somewhat dynamics-crunched); it's that this version is a really good demonstration of how good a CD can sound. Spin it on a top-grade player or through a good DAC and behold the state of the studio-recording art in late 1969."https://www.stereophile.com/
https://www.stereophile.com/content/revinylization-18-d%C3%A9j%C3%A0-vu-all-over-again
Cheers George