Developers B and C give results that are just as good, almost identical in fact, to developer A. But they are available from every photo supplier and when mixed keep for 12 months in used Coca-Cola bottles.
Not quite accurate. D76's ph changes over time which causes increased negative contrast, Xtol is not without issues, etc. Pyrocat doesn't require any special bottles or mystical chanting to work properly and it is easily stored for >12 months.