The toon shaders I use are common P5 toon shaders as from Compiler, Trekkie grrrl and Cresent. DarkSkills also have some cell materials. There is new toon packs at the ro market please. I knew nothing about them, but I think there are P5. If there is any improvements in P6 I do not know. Most of the improvment in my work is made true experiments with lighting. I have not seen any tutorial beside the already told. One fine thing it that is possible to combine different shaders with the blender node. See the picture how I created the markings for Bell. 1:free the cel-shader. 2: Conect the blender node in the shaders place. Connect the shader tree to input 1. Sett another shader or a coulor in input 2. Sett blending to 1 if you not want the shaders to mix. 3:Connect an image map to the blending and input your alpha map. The Cartoon with lines display mode is improved in P6. You can select the number of toon tones. Dr geep had something about it in his first presentation of Poser6. But this method needs a serious afterwork, ex adjust the hue/saturation.

TG