Films

(Britain release only has 5.1)

The Paramount 4K "restoration" is a desecration. It has completely revisionist color timing, harsh HDR, treatment of stock footage, bad encoding, selective DNR and grain management so bad that the entire screen frequently freezes up with only characters moving around in grain soup. It is so bad that the film's restorer Robert Harris publicly washed his hands of it saying essentially the 2007 restoration (with Willis and Coppola supervising) is how the film was intended and made. This is Paramount's modern version done their way. The new 1080p SDR Blu-rays in print are the crap 4K desecration master with the same problems still there just harder to spot and with crap encodes.
The mono option is an unnecessarily processed version of the lossy mono from the 2008 Blu-ray. The 2008 Blu-ray of the 2007 Coppola Restoration while an imperfect outdated disc is LIGHT YEARS better than this 4K desecration. The only truly major issue is that it is very slightly redder than the 2007 finished master as seen on DCPs. The lossy mono on the 2008 Blu-ray is the best version of the original mix known to exist as it is better than the late 80's mastering for VHS and LaserDisc.
DFIC review of the hideous crap 4K Blu-rays: https://youtu.be/0uw6-Kcy_UA?si=ob1nDg0wTCvemjH0

Criterion Blu-ray (caps)

Kadokawa JP Blu-ray has incorrect levels and looks slightly washed out. Criterion has slightly worse encoding, but both are solid in that regard.

MoC has a different translation from Criterion.

International Fox Blu-ray has the best encoding and the OAR of 1.85.1.

France LCJ Editions 4K Blu-ray is worse than Blu-ray - caps. Upscale from the BD with fake grain and horrendously encoded. AI enhancement is also present.

International Fox Blu-ray has the best encoding and the OAR of 1.85.1.

Criterion Blu-ray > Artificial Eye Blu-ray, Korea Nova Media 4K Blu-ray release is AI upscaled

Paramount US 4K Blu-ray > Capelight DE 4K Blu-ray (caps)

Although the provenance of Paramount's 5.1 track is not confirmed, the fidelity is outstanding and speaks for itself.
The 7.1 track on the Capelight/old Lionsgate release is just an upmix with nothing gained over the 5.1.
The original stereo mix is only present on older DVDs and LaserDiscs; all Blu-ray 2.0 tracks are downmixes.

Paramount 4K Blu-ray has no extras, Capelight 4K Blu-ray has most of the extras, Olive Films Blu-ray has a exclusive commentary

(4K Blu-ray has DNR)

Full Moon Features Blu-ray or 88 Films Blu-ray is better than 4K Blu-ray, which is poorly encoded

Avoid the Germany Hanselab 4K Blu-ray, as it's riddled with oversaturated colors, poor encoding, AI upscaling, and DNR. The included Blu-ray is also DNRed.

The new Universal 4K is AI upscaled https://slow.pics/c/5jD2BjKT and sharpened, see discussion on BR https://forum.blu-ray.com/showthread.php?t=377660&page=9

The 2024 Well Go 4K, as well as Apple TV Streaming is a lazy upscale https://www.reddit.com/user/Menspookie/comments/1no86mt/follow_up_the_wailing_4k_digital_ai_upscaling_on/

2016 Well Go Blu-ray.

Well Go Blu-ray or any of the international Blu-rays? > 4K Blu-ray, 4K is AI upscaled