Is the 2003 Dark Side SACD Still the Surround Gold Standard Against the 2011 Immersion Blu-ray?

Surprisingly, the 5.1 surround mix itself is identical on both releases — James Guthrie’s 2003 remix was so good that Pink Floyd just ported it directly onto the 2011 Immersion Blu-ray. What changes is the format: the SACD used DSD (1-bit/2.8 MHz), while the Blu-ray carries a 24-bit/96 kHz LPCM version. Some ears prefer DSD’s supposedly smoother, more analog feel; others find the PCM more precise and punchy. Either way, both are widely considered reference-grade for surround music, and the mix remains the definitive way to hear “On the Run” pan around your head or “Money” kick in from all directions.

But the Immersion set adds two extra selling points: it includes the Alan Parsons-approved 1974 quadraphonic mix in 4.0 (which has a