I am looking for the best and cleanest way to track Campaign income & expenses for a nonprofit. Currently use Classes for our programs and can run good P&L's for that information, but there are times when I need to know what campaign asks funds are coming through. Ex: Did that $1,000 event sponsorship come through the Partnership Campaign or through the Annual Giving Day Campaign. Ultimately the funds are marked as Sponsorship income for a particular program, but with classes I can't use additional information to delineate it. Anyone with experience on whether custom fields or tags would provide better or more flexible reporting on this type of information? 

Thanks in advance for any help.