Hi out there, I have been working away for two years without outside help after returning from a 20 year photo layoff. Anyway as you can see by my sign in name. I have been working with PMK pyro developer. Things that I have noticed are, although I like the printing characteristics of the negs, there is an increase in grain. In fact I am thinking of not using PMK for 35 mm because of the limited enlarging I feel is acceptible. After rereading the book of pyro I am confused about developing 4x5 negs in open tanks with film hangers. I have done this always to now, and am concerned about uneven development. The other thing I don't quite understand is the discussion about problems printing VC papers with an stained neg. I have to my eye been getting good results. However I am printing with a Minolta additive color head to change VC contrast. This unit uses flash tubes for exposure. I am printing with additive blue, and green light, and have run contrast testing with a standard step wedge, and different paper developer combinations. Anyway what do you fell are the real advantages to pyro development if any?