Which is better: a book, a movie or TV series Sherlock?

All of them. I can confirm it myself because each media brings the new atmosphere. Let's start with the book: classic Doyle's literature that will not stop to impress you. Reading it is like an adventure for you. Movie, I'm talking about the RDJ's version, it's sort of comedic and stress reliving but still carry the essential Sherlock from Doyle. Series, I'm talking about BBC version, it sets in modern era and it's still impressive to mash up modernism and classic Doyle's and creating new whole world.
Basically, take your pick.
But if you can have it all, why not choose them all?