The English Premier League normally is said to be the toughest of all. Season after season, there's always been heated competitions for the title and these teams are so good to the point that their days for wins, losses or draws cant be predicted many times smaller teams have outs how bigger teams, currently the top 4 spot race is shaky because the points margin are not even as distant as expected.
The premier league indeed is a very dramatic league as sometimes odds doesn't work the way we predict outcome of matches because often times the weaker teams begin to get stronger and tougher and even starts winning big teams, that's what makes the premiership to be dynamic and competitive. Inasmuch as football is concerned, England is the center of entertainment in football as most times due to tensed competition in the league, the winners mostly emerge towards the end of the season unlike other countries that their clubs are declared winner when the competition is still far from ending.
The quality level of the Premier League is very high. Everyone is aware of this quality and that is why the Premier League is the best in the world. We have often seen weak teams beat teams at the top of the league. Again, since such things are likely to happen in the future, the most enjoyable and beautiful league is EPL. In short, while competition is what makes a league quality, it is necessary to make accurate comparisons with other leagues.