The MPEG edition should have better video and sound than the rest, but will require the vcd card.
PSX sound is worse, video is slightly worse than mpeg, but has some additional content; so you can judge for yourself what the “best” version is.
There is an effort to improve the cinepak video for the standard sss edition (see above), so we’ll see how it goes.
Technically you could port in the extra psx content, but I dont plan on reverse engineering the game to that extent. Someone else can feel free to do that as an addendum when we are done.