Yeah, that's definately right about the MLS being boring. You have a lot of Central and South Americans playing over there, who are used to playing in really hot conditions, and some of them have played in high altitude as well. This means they play at a slow pace, passing the ball around on the ground. Also, many MLS teams, like LA Galaxy, play their home matches in hot weather as well.

The English Premier League is the best in the world, because the players have to keep running around just to stay warm, for the majority of the season, so there's more action.