I've heard it said that Tri-X is the only Kodak film that doesn't respond better in XTOL, that TX seems to do its best in D-76. While I haven't researched all the combinations personally, I do know that D-76 has been a very good fit with Tri-X for decades. Straight, it delivers good sharpness with finer grain; 1:1, it delivers slightly better sharpness with slightly coarser grain.(posted 8489 days ago)