hello, i just joined to reply to your message, so feel special
my answer might be biased, but i would say U of M. it's a well-rounded school, and as an international student, you will get full cultural experiences from around the world. the winters are pretty harsh, but you get used to it. i'm turning down a bunch of other schools from warmer climates just to go to U of M. unlike Georgia Tech, U of M accepts not only the brightest engineering students, but also the best musicians, writers, and scientists. have you visited the campus? it's beautiful, like a cozy town. so if you decide to go to U of M, i just might see you there!
good luck in your choices!