actually can not be compared between prestigious leagues in Europe, but football lovers place the English Premier League as a reference for other leagues. That's a natural thing because the English Premier League presents a very hot competition and is very unpredictable compared to the League in Europe. But I have seen significant developments in the Serie A competition where the League is no longer dominated by one or two teams.
Talking about which one competitive between Primer League and Serie A exactly all vote will choose as Primer League, there are all team always have surprise result match, not ever big top fourth position like Manchester City, Liverpool, Chelsea and Arsenal or Tottenham Hotspur will easy winning from small team. But Serie A dominance only By Juventus, Inter and Milan, less time we saw small team can't defeated big top team and always fourth standing position never changed by Milan, Inter, Juventus and Napoli. Every weeks on Primer League always unpredictable who will win although with top team like Manchester City.
Actually for Serie A these few seasons there have been some improvements especially for some of the underdogs like Atalanta and Roma but last season Atalanta seemed to be off track and I regret this.
As for the top clubs, it seems that in the top 4 there will be some changes next season if you look at the current condition of Napoli.
Not meant to be condescending but I'm still skeptical of their current players.