The Series S is more of an entry level and not as good of a console in terms of specifications; however, I would say if you're only going to be using it to play the NCAA FB game, then Series S would be the way to go. Series S does not have a disc tray, so it would be for digital games only, easy enough to download digital copies of the games straight from the console. The Series X has a disc tray, larger harddrive for game storage, and better specs (GPU, RAM) which would make games overall look and play better.