you want ALL the colors. and you want tiny line and fat wide. enter the fill pen. these markers are a little different. the ink is alcohol based which makes filling even. and if you wait for the evaporation to happen you can fill in again to achieve a slightly darker version of the same color. fill pens come in hundreds of colors, shades of grey, or another hue. there may be a better brand. but we are sure there is personal preference playing a big part. the pens are not cheap. but last year I bought a collection of used markers for $25. there were 53 in the set.
Copic and Prismacolor are two other brands.