Salut Jean-Bernard The only answer to your question is.DO YOUR OWN TESTS to establish the appropriate film speed (Exposure Index)and developpement times based on your own methods and procedures.For testing your system you can find some useful informations in Ansel Adams book "The Negative" or on Barry Thornton web site ( barrythornton.com ).PMK is a pretty good developper for the films you mentioned,all respond well to it. Y agree with Ed.His developpement charts are in your case only starting points.I'm amazed, why do you need so much films? Pick two films,one medium speed and one high speed,test them in PMK.Get to know these two well before adding another.So,don't be obsessed with the pursuit of the perfect negative nor waste your time in testing too much film/developper combinations It looks like the search of the Holy Grail.Go out in the field,have fun in photography and do your best in the darkroom to get the real goal in Black and White "The Perfect Print"(posted 8408 days ago)Amicalement Alain.