I agree that Tri-X and Acufine is a good combination. I used it for years taking shots in an old ice rink where I had to use a fairly fast shutter speed. These old negatives are as good as or better than any I have taken with other films I've tried in similar light situations, including TMax 400 and TMax developer. The grain is robust but sharp, and detail is very good. However, I did try Diafine once, and I found the look to be quite unacceptable. It had a soft mushy appearance, although the shadow density was ok.(posted 8554 days ago)