Derwent Coloursoft - 72 colours, manufactured in England ($1.47 each). Bigger colour core, they sharpen easily, no breakage at all. They are a wax based.
Marco Raffiné does not have the names of the colour printed on the pencil. I could not find a list from the manufacturer with the names either. The colour chart above was printed then coloured with my pencils.
I like them all. The Prisma colours are rich and vibrant, as are the Derwent. The Derwent are not fragile, but Prisma has more than double the colour selection.
Side by side it is hard to tell the difference between Prisma and Derwent on paper. They both lay colour down beautifully and blend well.
The snowflakes were coloured white, the paper is light cream colour, but it is still difficult to see the white.
This picture was coloured using all four sets and Staedtler pastel chalks for the background.
My conclusion is that we can never have two many pencil crayons. The biggest bang for the buck are the Raffiné Marcos. Most colour selection is Prisma Color Premier. It is like machine embroidery thread, the more colour choices and brands the better.
If there is a drawback here it would be that my adult colouring is interfering with quilting and playing the piano.