It was originally released in 480, so those DVD rips are probably the “best” quality-wise (unless they did some work on it before releasing for streaming).
If that’s the case it’s probably easier to rent the discs and rip them. Obviously this is a piracy community but hey, technically it’s still piracy if you’re copying rented discs am I right?
What I hate is I love encrypting my flash drives but every OS prompts you to wipe the drive if it doesn’t recognize the encryption scheme of another. 👎