I quite like the Roan Group's "Stranger/Cause for Alarm" DVD, as it is (although I sure wouldn't turn my nose up at a good documentary on film noir). The image quality is very good; the sound is, too. And the decision to pair up the two films is well-considered.
Revisiting it again recently, I must say that I had almost forgotten The Stranger's marvellously-choreographed opening scenes. The Wellesian play of light and shadow across sets almost impressionistically akilter was a delight to behold. And there are lots more little moments that can sometimes be unduly discounted thanks to the studio-dictated, formulaic structure of the film.
And, forgive me, but every now and then it sure is nice to see a Welles film with the dialogue in sync.