Avoid "Vinyl Rips" in FLAC unless you know the source. Many are poorly digitized. Stick with official digital transfers from the master tapes.
For the best listening experience, especially in high-fidelity formats like FLAC, these four albums are considered his masterpieces: Cat Stevens - Discography -FLAC-
18;write_to_target_document1b;_6Wjuae-EKt3gseMPusLykQg_100;57; 0;f5;0;195; Avoid "Vinyl Rips" in FLAC unless you know the source