What do you think. Which university has it? Most prestigious program, best teachers and best job prospects if you want to go for a career in international law?

I vote for NYU. Washington-based law schools are reputedly good, too. In England it would be Cambridge. I'm not sure whether any of these would be absolutely the best in every criterion you mentioned.

It depends on how you give the definition to the word " best".

I donno but I need your help: I have been admitted to Tilburg, Maastricht, Rotterdam, Groningen and waiting for Leiden´s reply. Which one is the best to do a Master in European/ International Law? All those rankings and reports are a bit misleading, so I gotta make up my mind as soon as p. Any tips will be welcome, thanks a bunch

LEIDEN surely is one of the best in the world for international law, given its facilities, location, faculty and history. Im going there.

At one point, before I was admitted anywhere I was unbiased. At that time, I applied to NYU as it was, in my mind, the best International Law LLM in the U.S. I also applied to Cambridge (being the best in the U.K.). I applied to other schools such as LSE, Georgetown etc. as well, but ultimately it came down to NYU and Cambridge.

I chose NYU for International Law, largely because of its great faculty, program and location.

I know if you are looking in England it would be the LLM at either Cambridge or the LSE.

NYU undoubtedly...

anyone at leiden?what's the program there like?

Maybe NYU.
http://www.usnews.com/usnews/edu/grad/rankings/law/brief/lawsp06_brief.php

Definitely Cambridge: any time anywhere! Look at those grand masters like Fitzmaurice, McNair, Bowett, Higgins, Jennings, Lauterpacht and most importantly Opponheim. They have two things in common: being a legend in this area and being affiliated with Cambridge University (Whewell Professorship).

Moreover, you will be taught by Professor Crawford and attend great lectures at the Lauterpacht Centre.

In brief, there is an unbeatable international law tradition in Cambridge.

I agree with the above posts, NYU and Cambridge are the best ones, but it would also depend on what area of International Law you want to focus on (international trade law, public internacional law... )