To add to Erry and CosmicGrad:
Most programs do not seem to offer international focus in the curriculum and I also feel that SIPA gives you the opportunity to decide and work towards a specific goal by picking a concentration, so for two years you know where you're going and your energies are channelised in just that subject/sector be it Security, Social sector, Economics, finance etc. Also one great advantage of SIPA is the mix-match with other schools. Although other schools may also provide this possibility, I feel Columbia has a more global appeal. I know for a fact that Columbia is a very well known name with donor agencies, government etc in South Asia (having worked in this sector.) I also feel that SIPA's international student body is definitely a pull-factor because in, say, subjects like development economics, perspectives (live ones) from other countries/regions makes discussion/presentations and learning a lot more satisfying, complete and they're embedded better. And like Erry and Cosmic Grad said in a globalised environment it makes sense to work towards networks across the world. In the end, as an international student, perhaps, my choice about the city matters and in this case NYC, for me, I believe, is the best choice and after talking to some other international students from SIPA, I feel NYC is a top pull-factor among others.
PS: the faculty is amazing, although I have not attended the students day, but I saw all the videos for both this year as well as last two years and they've across as motivated, experienced people who're slightly on the idealistic side, but I guess that's one huge positive on their side. As far as getting individual attention from professors is concerned, I think, THAT is something which anyway grad students would have to make efforts towards, no matter where you are.
Having said this, many congratulations to everybody for your schools ! This thread has been amazing!
Cheers!