320kbps MP3 or AAC is sufficient. For collectors: The original 1987 FLAC (16/44.1) is historically important but sonically inferior to the 2019 remix.
Warning: Do not fall for "FLAC" files that are actually upconverted MP3s. Use spectral analysis software (like Spek) to ensure the frequency response hits 48kHz (for 96kHz files) rather than being capped at 20kHz (MP3 range). pink floyd a momentary lapse of reason flac extra quality
by Nick Mason and restored keyboard parts from Richard Wright to fix the "creative balance" of the band. It removes much of the 1980s reverb, making the instruments more distinct and clear. The 2011 Remaster (The "Original" Choice): 320kbps MP3 or AAC is sufficient