USC v. Duke!

USC v. Duke!
Hey everyone, I have a big decision to make. I got accepted to both Duke & USC. Basically Duke would be about 20,000 more per year than USC. My parents are fine with either and want me to choose. I am wondering which is better.

Both seem to have everything I seek in a campus - a good balance between academics and extracurriculars, great sports, and a fun group of students. Both alumni connections are huge, but obviously USC is a little stronger here in Southern California. I plan to major in Econ/Business and I ultimately need to decide if I want to be far from home or not. Anyone facing the same decision that could help me out? Is there a big difference in academics? Social scene? Your thoughts and advice are greatly appreciated!! Thanks so much!