I'll start with your basic question: Do you tend to standardize on one film? My answer is a resounding YES!!! I started experimenting around with a lot of films, papers, and developers in my early days of photography and got myself hopelessly confused. I then read one book by a grand old photography teacher who said stay with one film, one paper, and one developer etc... I immediately chose a film and developer then a paper (I've since changed papers because the first one I chose was discontinued). I did this 12 years ago and it transformed my photography from a lot of sloppy junk to some "credible work". Mainly, I isolated variables such as film speed and developer time. I also learned how to expand the film (i.e. Zone System N+ development), and generally learned all of the properties of that film. I used (still use) it for everything from landscapes, portraiture, et. al. After 12 years, guess what? I still haven't completely explored all of the possibilties, subtleties and nuances of that film. Also, no matter what others say, I resist the temptation to change because I don't want to go back and do all of the testing and calibrating that I've done over the last decade. So... I would recommend this to anyone. By the way that film is old Kodak Tri-X and HC110 printed on Ilford Gallerie graded paper. When Kodak discontinued the old Tri-X I bought several hundred rolls of it and placed it in my freezer. At some point, I may try the new Tri-X once my old supply runs out. I spend most my time learning to be a good photographer rather than a chemist. In summary, choose a film and go for it, then spend your time making well seen pictures.