UW vs UIUC vs WPI

<p>Hi everyone,
I'm an international student and have been admitted to UIUC, Univ of Washington and WPI.
My major is Computer science and my education goal is a Phd in this field.
So what is the best school for me? UIUC costs me 44k/y while UW is about 38k/y and WPI gives me a 25k/y scholarship which brings down the cost to 27k/y)
Thank you veeeeeeeeeeeeeeeeeeeeery much.
P/S: I posted this thread on UIUC box, but I also want to hear from "UW people" so I post it again here.</p>