CaranDache coloured pencils are top artist quality pencils which are of a Swiss brand, they are, without doubt, the best coloured pencils I have used. Some of the best things about them are that they layer nicely with other mediums like ProMarker pens or watercolour paints so they can be used to add small details which a brush or marker pen can’t fill in; they have bold pigments so you don’t have to press too hard to achieve nice results which makes a difference from cheap coloured pencils which often dent the page more than they colour it in; the pencils are hard wearing so don’t need to be sharpened as often as other brands, meaning they’re longer lasting, and, finally, they blend easily and can be smudged for smoother blends between colours.
These, and Promerker pens, are my two favoured mediums to use when creating art. Coloured pencil has always been one I used often, but Caran Dache became a favourite to use within minutes of first trying them out, my favourite thing about them is how nicely they layer up and blend to form different tones of colours and shades to show shadows and highlights on an image.
(image found: http://www.johannas-art.com/index.php/caran-d-ache-pablo)