Early work - nikon camera, unknown films: book "Other Americas" --> bad print quality (I am guessing because of bad film developing, not printing) but best photos I have ever seen, pure genius. His best work IMHO.
Leica cameras, TriX and Tmax 3200 films: books like "Migrations", "Workers" ... --> excellent print quality, Paris Picto Lab did those prints - this was the lab that all Magnum guys used in golden time.
Late work - digital special modified canon 5D camera: book "Genesis" --> excellent print quality (here you can see what can be done when you have money to convert digital in 4x5 negative and print on Silver gelatin print, and when best Lab in Paris is doing this for you), but pictures are far away from his best work "Other Americas".