The two campuses have a similar feel. But at Duke there is more focus on sports, and our sense when researching schools was that it was a little more relaxed. We felt it was a very balanced place were the academics were great but the kids also have fun. Our tour guide at Duke was brilliant so that swayed us as well. One thing in particular that I didn’t like at Princeton was that you cannot double major. I know kids may not end up doing this anyway, but it just seemed more rigid, also with the junior paper and senior thesis requirements. Aside from ED though, it’s just as competitive to get in as Princeton. Good luck!