Everybody has their favorite film. However, if you include a shot of an 18% gray card at the beginning of each roll, your printer will have a reference to adjust color to. When I worked for Olan Mills(a hundred years ago)the first shot was the gray card, then every so often throughout the day, adding another shot, followed by the final shot of the day. This allowed our printers to adjust their machines to optomize the settings on the machines for consistancy, even if you had to change film midsitting. I still shoot my gray card first thing when I shoot color, then use that as a reference for all my prints.

Rick