Harold Miller

For the most part, the mono track available on the BD and UHD is fine, but there's an 8 minutes long segment which sounds terrible with artificially expanded frequency range causing very audible artifacting. The 5.1 remix doesn't have that issue. Sample

Warner Archive 4K Blu-ray is a remaster from the original VistaVision camera negaitve, FiM encode

The original mono sounds good. The Atmos remix is a mixed bag, music performances are sourced from magnetic stereo recordings and sound great, but mono dialogue/effectshas undergone destructive noise reduction and unnecessary EQ, so the jumps in fidelity are incredibly jarring.

Paramount 4K Blu-ray. See caps
HDR/grading: nice, but some blown out
Encoding: inconsistent, smeared motion
DNR: inconsistent, frozen
Old Paramount Blu-ray is arguably a solid alternative choice

Paramount 4K Blu-ray mono is different version of the Blu-ray mono from the same old 2000 DVD transfer.

The 5.1 remix on the 4K Blu-ray is an appalling remix done by going wild with artificially generated stems from Park Road Post who were given the surviving mono to separate. The experience is jarring and fidelity to original mix in terms of level balance, directionality and impact is nonexistent. Not only does this sound painfully weird, but the Paramount mixers then did whatever they wanted in terms of LFE, sound pans and effect changes.
The original mono mix was not restored and still needs it badly. The 4K master is filled with frozen grain examples coming and going plus some HDR issues in addition to the usual Paramount problems. It is simultaneously better and worse than the Blu-ray master.

Criterion 4K Blu-ray (review)

A new transfer from the optical soundtrack negative.

the older Blu-ray is included in the Criterion 4K Blu-ray