I like slow speed films. I'm talking about film with an ISO of under 100. Sure, I frequently shoot in the 100-400 range, but there is something about the way the fine grain films look. So nice. It is getting harder and harder to find, though.
Before they discontinued it (am I sensing a theme?) I was very fond of Agfa Ultra 50, a color print film. I once shot a roll of Kodachrome 25. Again, discontinued. Thank goodness Fuji is still making Velvia 50 slide film.
I guess amatuers tends towards fast films, and professionals are going digital. *sigh* I'm not a Luddite, but man, I'm going to hang on to film as long asI can.