Acros in Pyrocat/similar is superb. Not much staining, super sharp and wonderful tonality. I tested Exactol lux against HC110 on the same scene with Acros and the tonal separation was far better in the low to mid values, the grain was finer and the apparent sharpness MILES better with the Exactol lux. Pyrocat should be the same. If you look in my gallery, Spanish Olive was shot using this combo (5x4) and the original is a 23" print which is grainless and super crisp.
I am not really keen to use staining devs out here, so I will experiment with FX-39. V fine grain and I agree, a modern look which does not suit everything. Still, I prefer it by far to TMAX100 and even tho the negs look similar to the eye, my TMax readyloads print with little life (drab...dunno how to describe) whereas Acros quickloads print much closer to what I am looking for. I still prefer trad films in look tho. I've become less happy with FP4+ on smaller formats and so I am experimenting with Foma 200 instead.