The Donner Cut: At LAST all that footage gets used!
Having looked at this cut of Superman II tonight, I can only say that it seems better cuts of the dialogue was used as well as whole new swathes of cuts I never knew existed, nor did many others - I was really impressed by the new stuff spoken by the actors I knew so well from the Lester cut - seemed so absolutely refreshing to see all this, added DEPTH to the story!