Whats boring about it? There are some great matches and some great derbys. Apples and oranges I guess, but when people say La Liga is boring its because Real Madrid and Barcelona are always interchanging 1 and 2, but thats disrespecting great teams like Atletico, Sevilla, Villareal, Celta, Las Palmas etc.
There are some really amazing matches in La Liga and just look at Europa League where Spanish teams normally dominate too you take out Madrid and Barcelona from any equation and La Liga is still incredibly fun to watch. Much better than Bundlesliga, Serie A or Ligue 1 for sure. I love Premier football though and to me both are equal.