For the national competition, has to be English fans that are the worst - no contest. The worst fans at club level is perhaps Millwall (England), Aberdeen (Scotland), Feyenoord (Netherlands). Roma (Italy). As for the best i have no idea who they may be, although i would tout the Tartan Army as the best international fans, because win, lose (more often than not) or draw, they will always be partying. If there are any others that i may have missed feel free to add your views and comments.