I've been using 400 Delta for several years. The best combination that I found with D76 is 1:3 @ 75F for about 10 min @ ei 200. As others have said, PMK Pyro is superb with 400 Delta (rated @ 200--I use what could be considered N-1 most of the time), and have discontinued the use of D76. I too have found that TMAX is an overly touchy pain in the neck--400 delta is much better, and I use it exclusively. Kevin Kalsbeek(posted 9221 days ago)