I'm dancing on Panatomic-x's grave. I started using it back in the early 1960s, and kept using it out of habit for quite a few years. Then I discovered Ilford's Pan F; half a stop faster, and as fine grained, or possibly finer, with better tonality.(posted 8740 days ago)
Then, when FP4 plus was introduced, I discovered that it was capable of better sharpness than either Pan F, or Pan'-x, and the grain wasn't noticeably coarser, as long as I was careful with the exposure and development.
IMHO Tmax100 blows everything except Tech-pan out of the water as far as fineness of grain is concerned, shame it hasn't got the sharpness to go with it.
Yes, well, back to the thread. I don't see why FP4plus shouldn't fit the bill. Fifty year old film formulations are all very well, but we can't live in the past forever.