A Bevy of Howl's Moving Castle Book Covers

How could there be so many book covers for one book, and yet none of them portrays the castle properly?

"Wizard Howl's castle was rumbling and bumping toward her across the moorland. Black smoke was blowing up in clouds from behind its black battlements. It looked tall and thin and heavy and ugly and very sinister indeed."
-Howl's Moving Castle, "Chapter Two: In Which Sophie Is Compelled to Seek Her Fortune"

"The castle was uglier than ever close to. It was far too tall for its height and not a very regular shape. As far as Sophie could see in the growing darkness, it was build of hugh black blocks, like coal, and, like coal, the blocks were all different shapes and sizes."
-Howl's Moving Castle, "Chapter Three: In Which Sophie Enters Into a Castle and a Bargain"

(This one is actually Howl's Moving Castle and Castle in the Air in one volume.)

Which cover is your favorite and why?