Favourite Christopher Nolan movie?

I have seen them all from Following (1998) to Inception (2010) and i
just think the man is a genius.
my order would be;

1. Inception
2. The Prestige
3. Dark Knight
4. Following
5. Memento
6. Insomnia
7. Batman Begins

Inception is my favourite movie ever by the way. followed by The
Godfather (The first one of course).