FWIW, if you want to compare the results from different films, it is best to minimize the number of variables.
If you are relying on lab development and lab scans, I'd recommend sending two rolls with very similar images - one a still film that has given you good results from that lab, and the other a Motion Picture Film used for still photography.
Then compare the results from both.
That will help you determine whether the lab can adapt to the Motion Picture film's differences.
And whatever you do, don't send them anything with remjet, unless they are specifically set up to deal with films with remjet.