Arthur Tovey

Both tracks on the Kino Lorber 4K Blu-ray are badly remixed.

Kino Lorber 4K Blu-ray is disappointing (review)

The 4K discs in both Criterion and Imprint sets are FiM encodes, but low-passed. The compression is better, but some of the grain is lost. Difference is pronounced in screen caps, but not likely to be noticed during playback, without a reference to compare it to. Comparisons

All discs use the same source transfer. It's not of the highest quality, and it includes some slight distortion, looping, clicks, pops, and hum. Criterion cleaned it up for their release, but unfortunately also lost a lot of fidelity in the process.

MGM NTSC DVD doesn't seem to have some of the more prominent distortion and has slightly different EQ but is otherwise the same.

The Criterion Complete Kubrick and Imprint 1953-1957 sets include remastered BDs. All standalone releases are from an earlier master.
Arrow UK Blu-ray has an exclusive isolated score & effects track. Kino Lorber and Imprint have an exclusive commentary each.

StudioCanal 4K caps.Criterion Blu-ray better encode than StudioCanal Blu-ray.

Original Mono: Ultimate Knockout Collection/Knockout Collection replacement disc > Knockout collection original.

The Mono mix on the initial release of the Knockout Collection is a stereo fold-down of the 5.1, it also has a missing piano cue. The replacement disc and the ultimate knockout version fixed the error. 

The Steelbook and UK standard edition is the same disc as the 2023 knockout collection.