Films

Prime Video Streaming has better encoding than Australia Madman Blu-ray. Both releases have hardcoded subtitles.

It is in MPEG-2, but has a superior restoration that has less errors than the older 2012 Blu-ray.

The 5.1 remix on the US Blu-ray has poor mixing and heavily revised sound effects.

US/UK Arrow 4K Blu-ray has both the original Dolby Stereo 2.0 mix in its best quailty and the original Dolby Stereo 4-track discrete stems in 4.0.

UK StudioCanal 4K Blu-ray or FR Pathé 4K Blu-ray share the same disc (caps)

The StudioCanal UHD has a much better encode than the Lionsgate UHD with the same grade. The Vuelta UHD has a decent encode but it is in an incorrect color space and has German overlays.

UK disc includes only 5.1.

The 7.1 mix included on the Lionsgate UHD appears to be identical to the 2006 USA BD's LPCM 7.1 track and to be a straight transfer of the theatrical Dolby Digital Surround EX mix (originally matrixed 6.1, with the rear surrounds in the discrete 7.1 presentation being dual mono). The old GER BD has a 6.1 mix but it is a poor remix and the GER UHD has an Auro-3D remix of the 7.1 mix (mostly adjusted surround levels). All other discs offer a 5.1 mix, including the Studio Canal UHD

Radiance Blu-ray (caps)

4K restoration from the Original Camera Negative

Disney 4K Blu-ray has the original DTS-ES 6.1 mix in DTS-HD MA 6.1. Inferior Dolby Atmos remix is set to default.

Criterion 4K Blu-ray > Disney 4K Blu-ray: HDR10 same as the Disney disc, but Criterion's new Dolby Vision layer improves presentation in some aspects, and has very good extras

Original DTS-ES 6.1 mix: Both are equal. ES rear centre channel maintained on both releases, but is unflagged on the Criterion 4K Blu-ray.

Dolby Atmos remix: Criterion 4K Blu-ray > Disney 4K Blu-ray.

The 4K Blu-ray is an upscale with strong sharpening. Caps

Includes original 5.1 and an Atmos remix. The HD disc only includes 5.1.

4K Blu-ray is AI upscaled

The 4K Blu-ray bonus disc, the 2012 Blu-ray bonus disc, and the 2005 3 disc DVD have exclusive extras.

Same master, but less bitrate starved.

The encode on the BD is preferable to the UHD. Same master, but less bitrate starved: https://x.com/SadHillDevan/status/1530057783885721607?s=20 and see caps

Spain Resen Blu-ray is a bootleg

Germany Hanselab 4K Blu-ray is disappointing with AI upscaling

Germany Hanselab 4K Blu-ray is disappointing with AI upscaling

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. Part II overall fares better than the first film but it has all the same problems. Randomly some shots are the worst in the trilogy looks mushy and manipulated to death.
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