His style is just so unique I think you could pick up any deck of his and be impressed. Also his attention to tarot philosophy and history... although haven't I heard that it's heavily influenced by his own belief system?
I have the vampire tarot because it was in my budget and I was looking for a deck to use for Halloween. It's stunning, I've avoided vampire decks because they are generally cheesy. But I am into vampire lore and he not only captures the Dracula story in a very classical way, he captures the movement in the arts around the time it was published. The accompanying book is wonderful in its own right.
I thought about the Sevenfold Mystery but I think I am holding out for an Alchemical some day. I hear they are very similar, even some of the images are the same, so why not hold out for the original?
I would also like to see him depart from pasty white people and include PoC in a tasteful and appropriate way. Especially, like was already said here, in light of the fact that he is whitewashing some of the historical elements in his deck (in the same way that has been unfortunately been done throughout history).