The 6-color Copic Sketch kits have powerful color combinations for both beginners and advanced users.
The Sketching Grays and Skin Tones are safe investments that can not be missing from any collection. The rest of the kits are also excellent starting points for the themes they represent (floral, pastel colors, primary, secondary, earth and sea colors and blending).
Tip: Complete your choice of 6-color kits with the 3-color kits in the shades you want. But first check if the kits you choose do not repeat the colors.