Welles DVDs to own

[TheMcGuffin]

Hey everyone, I am looking into rounding out my Welles collection by adding the good european versions of OW movies. I was wondering what everyone considered the must haves. Right now I definatly want the French version of Magnificent Ambersons and am looking at the British Citizen Kane as well as the Italian Immortal Story. My question for everyone is what other versions should i look into? Who has these versions and are they worth it? What features do they come with and which of those are really worth having? And lastly, where you bought/recommend buying the DVDs from?