lol, yes - I much prefer his vindictive sneakiness, but also the scenes with him making his way to the White Witch's castle, when he's wrestling with his conscience are really well done.
I know the film tried to make him more sympathetic - give him a reason to resent his brother and so on, but I do think the story has more impact when he's had the same treatment as all the others and still chooses to be mean at first, and later treacherous.
Also, in the BBC version, he actually apologizes to them for what he's done, but he doesn't in the film, which bugged me.
But, having said that, Ed in the Prince Caspian film is bloody fabulous, and his scene with the white witch is brilliant (although I do like the LWW film's treatment of Ed destroying her wand, too)