To me Pan F is a leftover from those good old pre-T grain film days when we were all younger, films had more silver content, EI/ISO/ASA ratings and grain structures were different from today's and we could more easily hand-hold our cameras at slower exposures. Using the Sunny 16 rule average exposures with this film would mean shooting at 1/60 and f/16, and at 70+ years my hands now shake too much for me to get the sharpness I want. These days FP4+ and even HP5+ shot at box speeds give me much the same sharpness I could get back in the '80s and '90s with those slower films, and I can set my shutters to cover the effects of too much coffee in the mornings or, sadly but more to the point, the physical effects of my age.
I've always tended to slight underexposure anyway as shooting at say a third of a stop under produces negatives I prefer to work with. Thinner negatives scan best anyway and scanning gives me the shadow and mid-tones I prefer in my images. Choice of developer was crucial. I went with my favorite, D76/ID11 1-1 and Ilford's recommended time for the latter.
I've never had the oft-mentioned latent image problem with this film, as I always process everything I shoot within 48 hours and usually the same day. Most of us do, I suspect.
So for me, it was an okay film in its time, not up to Panatomic-X or Agfa 25, but I no longer use it as I've found other faster films to be as good. I think I may have a dozen or so bulk-loaded rolls in my freezer, unexposed. When I find them, I'll probably give them away to a young photographer I know to use for her art images.