As for the Song Of The South, I agree - the Japanese laserdisc has the best video quality. However, there are Japanese subtitles hard-coded during the singing scenes.
I have the two versions of the DVD (one with Martins and Coys Easter egg, other with Coal Black Easter egg) and they are from the Hong Kong laserdisc. Softer picture, but no subtitles. It's similar to a bad VHS copy. But it's all that's currently available as Disney decided not to release it again. There is an extensive thread on this in this sub-forum.
Personally, the cartoon sequences are the best part...... the rest of the movie is rather droll.
I'm looking forward to what Rowman can create from those sources!!

Looks like the laserdiscs aren't worth much on Ebay anymore. Too bad, it was a great format.