When choosing B&W films, some photographers will look at technical aspects and choose materials based on low RMS figures and high resolution depending on emulsion type in their respective ISO speed groups. With LF, there is much less concern over sharpness and resolution than with 35mm and to a lesser extent medium-format. Some `films` have a quality that is difficult to measure and quantify. That quality is when a photograph has a particularly very pleasing look that is sometimes described as `tonality`. You might read that one photographer loves the `look` of Tri-X developed in D-76, another might like Delta 100 in FX-39 or another might like FP4 in DDX or TMY in Pyro.
I know that there are many factors involved here such as choice of film and developer and choice of photographic enlarging papers etc, but what is it that you folks like about your choices of photographic materials or that of a favourite photographer whose work that you greatly admire?