Since it is a tie (6-6) for Tenebre Vs. Halloween II, I will vote to break it.
This is a real tough decision, as I love both posters, but I am going to have to go with Halloween II. I feel that the poster art for that is really creepy (not that the poster for Tenebre isn't, and I love the art for it, but it's not quite as creepy as the art for Halloween II). I hope I haven't made too many of you angry!