_The Film Development Cookbook_ by Anchell and Troop gives a very thorough treatment of the relationship of films and developers. I recommend it highly. The "look" of Tri-X can vary quite a bit with different processing. At EI 400 or below, I like D-76/ID-11 1+1. At higher speeds, up to at least EI1600, Xtol 1+1 does it for me. I used to use HC110, but I am more comfortable with the longer development times and somewhat greater solvent action of the D-76.(posted 8661 days ago)Your mileage may vary.Tri-X can be a great film to experiment with, and to get to know well.