I'd say my overall-ranking would be:
Ashes Against the Grain>The Mantle>Pale Folklore>Marrow of the Spirit
But the reason AAtG is number 1, is because i feel like i can listen to it at any moment, it fits every mood.
The Mantle can be just as good when i'm in the mood for it, and i really have to be, considering the majority of it is instrumental, and i really gotta be in a certain mood to appreciate it.
Pale Folklore is awesome as well, and can easily battle with the other 2 for my favorite spot.