JPG files are finished images: we remove the orange mask (for negatives) and grade every frame. They open anywhere and are instantly ready for sharing or printing. For most customers JPG is the right choice.
RAW (our scanners output DNG) is the scanner's raw data with no mask removal and no grading applied. A color-negative RAW opens as an orange negative image - you invert, remove the mask, and grade it yourself in Lightroom + Negative Lab Pro or similar. Maximum control, but it requires post-processing skills and time, and files are several times larger.
Not sure? For everyday shooting, JPG. If you want full control over the final look, RAW+JPG gives you both: browse the roll in JPG, then finish your favorite frames from RAW.