I believe that I have read every novel Jane Austen wrote, but I don't actually remember all of them well enough to put them on this list.
Of the ones I have read recently, Emma is probably my least favorite. Which, actually, isn't surprising, because it's the opposite of my favorite, which, predictably, is Pride and Prejudice. I do like the book, though. It's funny, and the irony is oustanding. The characters are either endearing or obnoxious, sometimes a combination of the two, and it's extremely readable.