Before 2021 Fantasia was the worst restored/preserved. Second worst was THX1138. But since then THX1138 is now last place since Fantasia has come so far. Right now you essentially have two choices for THX1138. Either the laserdisc rip or the Grindhouse Edition. And the laserdisc version looks pretty rough in this day and age.
Nope, this is the only way to go for now: