Heresy everyone knows that pyro developers give you negatives that don't require any printing skills to get perfect results.
Know your material and know how your material responds to certain lighting conditions. Fiddling around with 1001 developers is one thing but to get the best results you have to have consistency. Choose one or two developers and a film not different films one film. Get to know that film and developer combo, try it out under different conditions and analyse the results. That's the way to success imho