I felt the same when I got accepted to my top 2 choices. Both are great programs in different ways, and I felt so grateful that they both wanted me that it was hard to say no to one of them! But you can't attend two schools. I went for the one that felt like a better fit for me. Is it possible for you to go visit again? Or maybe have a phone conversation with faculty? Did you talk to the current students to see how they feel about the programs?