SDXL_Niji_Special Edition really is special! I just cannot stop playing with it. It is now one of my two "to go" models, the other one being SDXL 1.0 base (which works well with LoRAs).
What makes SDXL_Niji_SE special is that it is so different from the base SDXL 1.0. The poses and the composition are more dynamic, more exaggerated, which give an image that Anime/Manga feel that only this model can produce. I've played with other "niji" models, none of them came close to this one.
I also love the image style when I use the sai-anime template "anime artwork{Prompt}. anime style, key visual, vibrant, studio anime, highly detailed" along with "art by J.C. Leyendecker" and negative prompt "Photo, deformed, black and white, realism, disfigured, low contras"