How noticeable is FLAC vs MP3?

In the realm of digital music formats, the quest for the ultimate audio fidelity has spurred endless debates, none more prominent than the discourse surrounding FLAC (Free Lossless Audio Codec) and MP3 (MPEG Audio Layer III). Advocates of FLAC ardently proclaim its superiority in preserving sonic integrity, while proponents of the ubiquitous MP3 emphasize its