I am in the process of reopening my wet darkroom. When I was last doing a lot of work there, about 2003, I shooting Tri-X and processing in PMK. Looking into the various pyro developers available today, I am wondering if I should make another choice. I want to avoid mixing powers so I need a liquid developer. What are other using? With what film combinations? Positives? Negatives? (No pun intended) . . .