I am also considering UMich. They have a better analytical program and I got multiple personal emails from their professors after being admitted. But right now I am leaning more toward Cornell, because they have excellent nanotech research facilities and I have some friends there already. They also pay me better.
I have been in contact with Prof. Chen since last summer, so I am 90% sure I can get in his group if I fit well in his group and I am okay with his advising style. I am not sure what we can do if we can't get profs of our choice; however, from their website, profs who are taking students this year will give lectures at the beginning of fall semester, I guess it won't be hard to find other profs we want to work for.( They have 30-40 new grad students each year) Prof Coates is a really famous prof in his field and Prof Aye is a rising star based on all the awards she got recently. I think they are both great professors to work for. I also heard from last year's students that they do some sort of rotations before choosing an advisor, but it's not stated on the website so I am not sure about it.
In addition to general questions, I also want to ask about their research collaborations and other funding possibilities.
I was wondering is it really bad that I end up not choosing my POI as my advisor because I don't like his advising style or his group? (just saying)