If budget and space were bo concern, I'd do drawers for more but I have no more room for them on my bench(have 2 snap-on branded units I scored at an estate sale) without dispacing my benchtop tools.
I could mount them elsewhere but it's nice to have everything in arms reach. I don't want to run laps to get parts.
I'm also a silicon hoarder.
If I ever get to build a shop, I'll build an electronics only bench and will definitely do it differently.
But the cardholder method is definitely the more economical way to go. And like I said before, way easier to reconfigure for new parts if keeping them in a particular order matters.
I do plan on getting more parts bins for general hardware. I hate stopping everything and taking an hour and a half to got get 1x 2 inch M12 pan head...