Ooh, do read Our Mutual Friend! :) It's a good one! :) :)
I would say Our Mutual Friend... I love the movie and have read parts of the novel, it's very long...Did I tell you a girl I work with got an advanced AND personally signed copy of Conspiracy of Kings?? She even let me see it, talk about amazing!
I'm reading That Hideous Strength now, but as soon as I'm done, it'll be Our Mutual Friend! I can't wait. I have heard so many people say it's their favorite. Oh, I'm so jealous of your co-worker! ;) Is she going to let you read it? I preordered one on Amazon, but I got some other things, to get free shipping, and so it looks like they aren't shipping it right away LIKE THEY ARE SUPPOSED TO. (It's supposed to be here TODAY!) Anyway... I'm so glad you read them. All of my friends are loving them, and it makes me so happy!
Oh, I adored "Wuthering Heights" when I read it years ago. I haven't heard of the other books you mentioned here. :)