I love all the Pride and Prejudice movies, but I think I like this one the best. Director Joe Wright did such a beautiful job, the movie is visually breathtaking. And Keira Knightly and Matthew McFadyen play Lizzy and Darcy is such a human way that I find endearing.
If you're into that sort of thing, I highly recommend watching the film with the director's commentary. Joe Wright talks about different ideas that went into the scenes and raptures on and on about how great the actors are. I noticed details afterwards that I wouldn't have caught before.