I'm currently at series 5, and 11th just took the first two episodes to instantly become my favorite itineration of The Doctor. I love his whimshical silliness mixed with the anger and experience of a thousand years old being. It just encapsulates perfectly how it should be for me. (Even though I have only seen three doctors as of now).
I'm really excited to see 11th and 12th runs, since I love the first one and the second one seems to be the second most beloved after 10th in the fandom.