Two complaints account for nearly every crayon that disappoints. Both are decided in the blend, not in use.
Pale colour is a pigment problem
A hard, filler-heavy blend leaves wax on the paper without much pigment in it.
Pressing harder does not fix it; it just breaks the crayon.
Snapping is a hardness problem
The same hardness that makes it pale makes it brittle.
Softer, better-loaded blends flex slightly instead of shearing.
Diameter is the other half
A fist grip applies force through a short lever, which standard barrels lose to.
Jumbo formats exist for physics reasons, not styling ones.
What to ask for
Stated laydown, stated break resistance, and the barrel matched to the age.
Three questions, answered in samples rather than adjectives.