UNC vs Vandy and CMU

<p>I'm currently enrolled at CMU but I got off the Vandy and UNC waitlists. What are some advantages (academics, social atmosphere, surroundings, prestige, job opportunities, etc) that UNC has over Vandy and CMU? I'll be majoring in econ or math at Vandy, econ at CMU, and business administration at UNC. I want to get into business, maybe proprietary trading after college, and I'm thinking about working either in the northeast or in California after graduation. </p>

<p>Thanks!</p>