Carnegie Endowment for Intl. Peace Reviews

It's a relatively small organization (<300 employees), so you get more access to higher-ups and a better understanding of how the institution works, as a whole. The culture is open and collegial. Carnegie is always hosting events and panels with scholars and policymakers. Most of these are open to the public, so there are tons of built-in networking opportunities if you're interested in policy analysis. There are five global offices (and counting), and Carnegie encourages collaboration among them, so you'll encounter a range of perspectives, instead of just the domestic take on issues. You're on what I like to think of as Thinktank Row--right between Brookings and AEI. Five weeks of PAID leave (note: almost no one actually uses all their vacay. Some people choose to cash it out when they leave.)

On the plus side, Carnegie has assembled a world-class group of experts working on timely issues. The work is intellectually interesting and I feel like I learn something new most days.