I have and love both brands. I live in Pa. and the dews are dropping as the cold weather moves in. A lot of the CJ products have glycerin which is not so good for winter while Oyin has more products that don't contain glycerin which I can use year round. so Oyin wins for me. Whenever you are deciding on products it's good to consider the ingredients, how they fit with your climate and what your hair likes and needs.
3b/c with some 4a in the middle of crown and back, medium to high porosity, frizzy, thirsty hair!