Ok, so what DVD's will you never part with regardless if they come to Blu. Here is a list of a few of mine:
The WIZARD OF OZ BOX set. (Will always look sexy)
THE MALTESE FALCON (Cover Art is insanely good)
MEMENTO (File Case Cover is UNIQUE)
DONNIE DARKO DELUXE - Want every version I can get, love this movie.
CASABLANCA - See above.
Anything CRITERION - They will keep going up and remain collectable over time (See THE KILLER/HARD BOILED)