Computer Science at UNC vs Duke 2018

My son was accepted to both Duke and UNC for CS. Trying to figure out if it is worth the extra 75K to attend Duke. He has lots of CS experience going into college, 3 summers as a paid intern at a software company and many self driven projects including a solid app on GooglePlay. He likes that Duke is more theory based…but we like the UNC price tag and have heard recruiters hire from both schools.
Thoughts?

These questions are always hard because the value of $75,000 is so subjective.