Quote Originally Posted by Max Power
Is HP5 to Delta 400 what FP4 is to Delta 100?
In my experience, YES. Unless you absolutely need the finer grain of the Deltas, the "old" films are supreme. Tonality and flexibility are so much better that I have settled on "classic" films only.

Pan-F is finer-grained, maybe not quite as forgiving as FP4. I won't compare it to Delta - they're too different.