Huh? I'm not quite sure what you are asking. Which of these three for what? To buy?
None of them until you sample them, as I don't think any of them are safe blind buys. The Casanova and the Marquis de Sade are sort of Lutenesque in style. They are both rich, complex and big fragrances, with the Sade being the richer and heavier of the two. The Casanova has a gourmand quality to it that I quite like and the dry down is very creamy. Both last quite a long while, the Casnova lasts at least 24hrs on my skin and the Marquis de Sade about 18.
The Noir Patchouli is quite nice, some complain that its not a patchouli heavy scent but I think that it presents patchouli in a couple of different ways from the top notes to the dry down. I get at least 12 hrs out of this one.