Ted: I know GH says 250mL is enough. I shouldn't have doubted him! I was just responding to the suggestion in Anchell + Troop where they suggested 500mL for developers in a category of developers at a certain dilution rate.(posted 8352 days ago)Compensation: developer exhaustion (due to inadequate quantity) may well be different to a dilute developer becoming exhausted in the emulsion. I'm not sure what to expect.
Consistency + Repeatability: Good point. Strength of my favourite developer (PMK) may well be a bit variable with age, chemical purity etc.