Wayne Grace

Theatrical Cut: Shout! Factory 4K Blu-ray
Extended Cut: The 30th Anniversary Extended Cut on fanedit.org has the additional TV footage and is also uncut.

The TV version is extended but is censored. The Shout! Factory 4K Blu-ray is restored from an interpositive, no release so far is confirmed to be from the Original Camera Negative.

Shout! Factory 4K Blu-ray caps, very impressive upgrade, VFX shots look a bit better as well thanks to the new scan and HDR, magenta touch in the old master is no longer there

PQ looks the same for all BDs, but only Shout! Factory/Australia Via Vision Blu-ray/Germany Kinowelt Anniversary Blu-ray has both theatrical and extended cut

StudioCanal 4K Blu-ray > Criterion 4K Blu-ray. 

StudioCanal 4K Blu-ray is encoded by FiM and doesn’t have the low-pass filter the Criterion 4K Blu-ray has.

Criterion 4K Blu-ray is closer to the original DVDs than the 2015 Criterion release, not sure about whether the StudioCanal 4K is like the Criterion 4K/original DVD

Criterion 4K Blu-ray has FEL Dolby Vision, StudioCanal 4K Blu-ray has MEL

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