Copic Sketch is the most popular among all the Copic markers. It comes in the widest range of colors, and features different types of nib combination. Ideal for illustration, craft and caricature.
Copic Markers are designed to last for years (or decades!) because they’re refillable, and you can replace the nibs when they become worn.
 
If you are looking for more color variety, go with the Copic Sketch. If you want a safer, cheaper option, the Copic Ciao is the way to go.
 
Vibrant, Smooth Colour: Copic ink applies smoothly and is easy to blend. The alcohol based ink dries acid free and does not destroy paper fibres the way water based inks do. Also, the open time on uncoated papers is limitless, so you can go back and re-wet the ink years later!
Permanent & Non-Toxic: Copic markers are free of harmful chemicals and overwhelming odours, making them much more enjoyable to use than other brands.
Refillable: Once you purchase a marker, it is yours for life. By simply refilling the marker and replacing damaged nibs, your marker will last a lifetime. Some artists have been using the same markers for up to 25 years.
Color choice : 180 Colors.
2 Nib choices :  Medium Broad nib on one end and a Super Brush nib on the other. The Medium Broad tip is a firm, angled chisel that can be used to make calligraphic strokes. The Super Brush tip is a little more flexible, and feels almost like a paint brush.
The Caio’s cap is designed to have a few openings. This is so that, if swallowed, the cap will not interfere as much with a child’s breathing. If you color with your kids, or simply have some little ones around that might like to test out your new markers, the Cias are probably be the safer option.
 
Set Choice :
1) Copic Ciao 12 Color Set
2) Copic Ciao 24 Color Set
3) Copic Ciao 36 Color Set: A,B,C,D, E
4) Copic Ciao 72 Color
Set A: Includes a wide selection of basic colors commonly used in design and illustration. The set covers vivid tones, blending shades and essential grays. Also includes a colorless blender (0). Suitable for all levels of experience. (A combination of Copic Ciao 36 Colors Set A and B).
Set B: A well-balanced set covering a wide spectrum including a variety of neutral colors, ideal for adding depth and a sense of transparency to your artwork. (A combination of Copic Ciao 36 Colors Set C and D).
 
Detail color code, please visit
 https://copic.jp/en/product/ciao-set/ciao36a-set/