https://forum.blu-ray.com/showthread.php?t=112856&page=67
According to the Blu-ray forums, the Swedish dub on the Blu-ray (and possibly other 5.1 dubs) have a better Fantasound 90 discrete mix than even the 2000 DVD. These are lossless, but they will be of higher bitrates than the 2000 DVD (640 kbps Dolby Digital vs. 448 kbps Dolby Digital) or equal in the case of DTS.
The most interesting one would be the Japanese Blu-ray, since it has a lossless DTS-HD MA 5.1 mix for the Japanese dub, and it may be similarly untampered, with the benefits that come with being lossless. Ideally, patching the Deems Taylor narration to the centre channel of a dubbed track (hopefully, the Japanese one if it is untampered Fantasound 90) would give us the best surround experience.
I suppose someone would love to try it.