My favorite medium to work with was the oil pastels. I love the way you can represent different values easily by using a blending stick to make the color go from light to dark. You do not need to do layer upon layer to get the color to be thick because it comes on so thick and rich in color. I love how it looks on black paper and how the color always seems to stand out. The only thing I wish was different about the oil pastel is how easily it is to get seamered or ruined by rubbing it against something accidentally.