Interesting discussion. It sounds like most folks here want a list of "Best Catalog Film Transfers/Presentations on BD".
Implicite in the term "Best" is the notion that it should be reasonably faithful to the source material. But I think it also needs to be acknowledged that technology both in the home and in the production environment has advanced considerably since most of these films were originally made, so that a modern digital presentation should actually exceed the quality of the picture/sound that most people experienced when they originally saw the films in a theater, in some ways.
Which term is preferred btw: "Catalog" or "Library"?