Make the choice from the job
Use the slicer estimate for the actual geometry, then add only a justified reserve. Weigh a loaded spool when inventory is uncertain instead of trusting a label.
What people often miss
Printer condition, material formulation, model geometry, orientation, and post-processing can change the outcome. Treat a comparison or troubleshooting step as a decision framework, then validate it on a representative print.
Use the workbench for the numbers
These tools help turn the decision into a material, cost, dimension, or time check without pretending that one generic setting fits every machine.