Hey, congrats to your admits! I just read some of your posts and want to give you some information as a Chicago alumni. If you feel you are creative, intelligent, and hardworking enough, then Chicago would definitely provide you with a lot of resources. They have a great platform for you to succeed. But the downside is that few professors would care about you. They are toooooo busy and most of time just focus on their own research and job. I don't know what your subfield is. Just take a look at their placement website and you will find many students end up in a place that looks unmatched with the prestige of the university. Also look at the CV of the current grad students and you will find some of the fifth, sixth, seventh year students even do not have a publication. Also, it is not easy to graduate in five years. As I know, graduating in six years is relatively fast. Professors there are great, but they are just too busy to teach and discuss with you unless you are coauthoring a paper. But as I see, most of the professors there like to work individually or with professors at other institutions. I don't know about UCS. Just give you some information and you might need to think about the tradeoff if you choose Chicago. I didn't apply to Chicago as I just don't want to stay in a cold place without any help for at least six years.