Both are amazing. The EDT presents a wider range of notes in that it starts with the woooooonderful fruit and spice and ends up with the vanilla. It's rich, dark, mysterious, dangerous, yet comforting and satisfying. The EDP has less of those top notes and moves quickly to an ambry/vanillic base. Both offer great longevity and sillage (if you care).
I don't know what your wardrobe looks like or what your taste is but I would think that most people would prefer the EDT because it's more...how would you say it...panoramic? But I loved it so much that I got the EDP also and I'm thinking of layering them next time.
Let me say that scentemental (one of our great BNers--knowledge and quality writing like nothing else) compares it to the best of the niches (e.g. SL) and stated that it's one of the best made fragrances ever.
I smelled the EDT when it first came out but it was so dark and dangerous to me that I didn't approach it for 10 years! Then I broke down. By then I was a BNer and the rest is history.
Check out the notes and the reviews. I hope you'll enjoy it.