Stackcables (and any other type of passive mult) are fine for anything but pitch - in 99% of all other cases a tiny bit of voltage droop will not be noticed!
the only exception to this is some modules expect to be plugged into a buffered input - I find Maths needs to go through a buffer to some modules, for example
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities