When city won the league, united were still top 3 and nobody would dare say another English club were objectively better. It would come down to a couple of bad games or an injury. Now, we can say that it isn't down to a couple of bad games and the management of the team is objectively worse (Fergie will be missed).
Pick a team and stick with it. Local is best because you don't need free-view to watch games with mates/your dad etc