Hector V. Sarno

Australia Via Vision also has a Blu-ray set but it seems to be a collab with Universal so we are assuming it's the same here.

A new 4K restoration from a 35mm nitrate print from and a 35mm composite duplicate negative.

Spain Universal Blu-ray is from a very soft DVD-era transfer; caps

Criterion 4K Blu-ray is a new transfer by UCLA, with a bit more high end detail

The earlier transfer used on the Spain Universal Blu-ray and MoC DVD is a bit boomy with boosted bass. The 1999 Criterion DVD uses an even earlier transfer with noticable artifacting and less detail.

Spain Universal Blu-ray has older MoC extra "Kent Jones and Dan Sallitt on Trouble in Paradise" with MoC watermark, and no other extras

Amazon US HD Streaming is from the 2018 UCLA restoration. Olive Films Blu-ray is from an older scan and quite rough. caps

Olive Films Blu-ray is again rough, with distortion, crackle and other issues, but sounds much more natural. With some EQ the restored track can be significantly improved

Kino Lorber Blu-ray not only suffers from Quicktime Gamma Bug, but also has slightly worse encoding see caps comparing 0.88 gamma

Flicker Alley Blu-ray (encoded by FiM) has much better encoding than Lobster Films Blu-ray, see DVDBeaver caps

Criterion 4K Blu-ray (review)