I just wanted to add something regarding the Novus Ordo. Correct me if I'm wrong, but when Paul VI introduced the Novus Ordo, he mandated it's use in the vernacular exclusively. Unfortunately, so many troublesome Latinists kept attending the immemorial mass through whatever means they could. In 1974, Paul VI allowed the the Novus Ordo to be said in Latin in order to get people to stop attending the old mass. In my view, the Novus Ordo in Latin is the worst possible way to hear mass. It just doesn't fit with the "spirit" of the Novus Ordo, since the people can't understand it, and it's motive of getting people away from the old mass seems devious and under-handed.