Criterion

4K digital transfer supervised by Claudia Weill and DP Fred Murphy

Criterion Blu-ray new HD digital transfer; source was Digital Betacam/MiniDV in 625 widescreen PAL, edited/conformed in PAL, graded/mastered in NTSC, with original D2 NTSC master used for the HD remaster.

Criterion or UK 88 Films Blu-ray are from director-approved 4K restoration with minimal differences see caps

Both Criterion and 88 Films have the same audio

4K restoration

There's also 4K Streaming but no comparison is available

US Criterion Blu-ray : See caps. Criterion and 88 Films share a regraded and brighter master; Carlotta didn't follow the regrade and its image is very dark.

Mono spectrograms

The 5.1 track is a new mix from the original elements, rather than a straight transfer.

Criterion booklet notes:
> High Art is presented in the aspect ratio of 1.85:1. Supervised and approved by director Lisa Cholodenko, this new 4K restoration was undertaken by the Academy Film Archive and the UCLA Film & Television Archive, in conjunction with the Sundance Institute, using the 35 mm original camera negative. The 5.1 surround soundtrack was remastered from the DA-88 edit masters and mix masters. Funding was provided by the Academy of Motion Picture Arts and Sciences, Frameline, the Sundance Institute, and the UCLA Film & Television Archive, with laboratory services by Roundabout Entertainment, Red Hook Post, and Monkeyland Audio.

Amazon Streaming Release or potentially other streaming 

The Amazon Streaming release has more high-end detail than the Criterion Blu-ray.

Eureka release has a better encode, but is taken from an older master. The Criterion Blu-ray was a new restoration from the ground up, and is substantially improved despite not being as well encoded.

Criterion boxset but awful compression

FiM encode w/o English subtitles; Criterion boxset one has awful compression. review

Film4/Spirit Blu-ray has worse encoding, presented in 1.78:1 and is from an older master caps