According to the LL.M Guide these are the best LL.M programs for competition law in 2017.
University College London (UCL)
London School of Economics (LSE)
King’s College London (KCL)
University of Liège
The Brussels School of Competition (BSC)
The Freie Universität Berlin
Fordham University School of Law
The College of Europe
New York University School of Law
Loyola University Chicago

What do you think? Do you agree with the ranking?
For details see https://llm-guide.com/lists/speciality/top-llm-programs-for-competition-law