I usually shoot tri-x for my Rollei 35. I normally guess exposure and it works fine but I normally shoot stopped down and use it for landscape. I just want something finder grain and just as easy to use. The films that I am thinking of are: Acros 100: Love it in 120, never tried it in 35mm TMAX 100 or 400: I do not have much experience with this film, 400 I found OK in 120...very fine grain but most films are with large negatives Delta 100 or 400: No experience with this film. Pan F 50: No experience with this film. Well i now that Pan F offers a very different look: high contrast and traditional grain but maybe* not any finer than the others. My questions are on the usability: 1. Latitude: How do these films rank in terms of lattitude. I am just guessing exposure but err on overexposure and it works fine. My thinking is that Pan F is not the best in this department and that faster films are less leniant than faster films. 2. Latent image: How do these films rank in this department. I would finish a roll maybe once every 1-3 weeks. It is my everyday carry and I simply do not shoot enough on a daily basis and when I do I oftentimes like to take my bigger cameras.