After switching over to Neopan 400 as my standard film since late last year. I have found that D76 1+1 is pretty much on the money for me. I thought the film when developed in D76 neat, a smidge on the soft side.
Once I switched to the 1+1 dilution, the negs snapped brilliantly and the skin tones are like FP4
I rate it at 320 ASA. The box speed of 400 ASA is probably correct.
Last Saturday I ran 6 rolls through the camera in my first major usage of this film, I'm very happy with the results.
The negs are sparkling on the light box, the contacts are terrific and the enlargements are wonderful.
35mm usage here.