To get both of these films in one set is a bargain. Blu-ray disc quality is very good. Subtitles in English cannot be switched off, so if you speak French it is better to get the French release from Amazon in France.
I agree with previous reviewers that the Blu-ray quality is "all things considered" no better than the older Dvd. This is after a long comparison between the two versions (1.33 and 1.66) and the Warner Dvd The extras are good, so this is really the only reason to buy.