Winsor & Newton ProfessionalArtist Watercolor Tubes
Both Artists' Water Colour tube and pan colours are made individually to the highest standards. Pan colour is often used by beginners because it can be less inhibiting and easier to control the strength of colour.
Tube colour is more popular overall, used by regular users, those who use high volumes of colour or stronger washes of colour. Many painters have both, as pan colours are useful when travelling and sketching. Of course, artists can use both tube and pan together if they wish.