dvdmike said:

The is no such thing as a 70mm print

Huh? Oh, you mean... huh?

Anyway, given PDB's (commendable) preference for an authentic theatrical recreation, I would say that the Criterion laser is the closest we have to a reliable reference (subject to the occasional pinch of salt, as in the case of Alien).

If there's any problem getting hold of a copy, I have a gap in my busy capture schedule; I only have the CLV version, but as far as I'm aware that shouldn't affect colour rendition.