For me its the use of excel program. It can be used to do ALL of your adding and subtracting and do it alot faster and neater than you can by hand. I ABSOLUTELY love it. While people are setting around adding and subtracting i got the jump on them and can be thinking about strategy rather than addition. Plus if you get crafty with the program you project SO much stuff. This year i have about ten to eleven worksheets with all kinds of tidbits including Defense by committe stats strength of schedule,nfl schedule, QB strength of schedule,plus all rosters,draft notes from previous years,a mock draft i did projecting what might happen and what to do in various scenarios-all of this can be done by hand but i think its basically neater and faster.