I finished a couple of rolls of Tri-X using Photographers' Formulary's TD-16 developer, a more stable version of D76 that they say could last up to 6 months if stored correctly. From what I can see, the results look almost exactly like D76. There is a slight, slight difference in tonality, but it has no effect on prints. These were developed full strength for 7 minutes at 68 degrees, just like my D76. Shot at 200 w/ a Canon T90, FD 135 2.5 and yellow filter. Excellent developer.