This sounds like a good project! Best of luck on it. As I grew up with this version, I'd be happy to have it preserved in good quality. Perhaps you could use the 5.1 Theater Disc preservations for the audio once they are done...

You_Too said:

Flunk has crushed shadow detail and is oversharpened.

Reivax has some weird frame-blending which adds more smearing, and makes each shot fade into each other by one frame.

The best is Gkar, and TB is second, being a bit more blurry than Gkar.

Hmm? Sorry, but I disagree. While the Flunk is over processed and has digital errors, the G'Kar is far from the best. The G'Kar, in my opinion, is the absolute worst of the '97 PAL Discs. It's over compressed and undeniably soft.

The Reivax actually looks the best overall to me despite the added smearing. The TB is second best for good compression but an overall lower quality sharpness than the Reivax; since the blending of the Reivax may be an issue, I'd actually recommend you use this one for preservation purposes.