i prefer single stage for solid colors. i used centari for years and used the glamor pack hardner. every black car i do is single stage. many will tell you bc/cc is better but i dont buy it. it's double the work. one thing though , many of the new single stage paints will change color on you when you buff. red to orange ect. use 1st line paint. the second line paints dont have the pigment as strong. good luck