I'm currently using Derwent's studio colourpencils, a 72 pencil set out of which I use about three or four colours like red, blue, pink, brown to do monochromatic drawings. I hardly ever use any of the other colours. Some of the pencils are too hard on the paper and don't come as soft as the others, I guess because of the pigment. Now they're half the size they and my pencil set looks unbalanced.
So what brand do I buy if I want to do layered monochromatic shadings? Not Prismacolours because they're a bit crayony for the kind of shading I want done. I have Derwent's dry pastel pencils as well, but can't use them for practice renderings cz they smudge after a while.
Do make suggestions, I have no knowledge of any other brands besides these two.