another thing to consider might be - put the money the module swap would cost you in a jar and every time you buy a module put it's rack rent (modules hp * cost of 1hp of rack) in that jar too

when your rack becomes full, you will probably have enough in the jar to buy the next rack

this is the way to go if you like ergonomics instead of trying to cram as much as possible in as small a space as possible

"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