<p>Let’s be clear. Your school only helps to a certain extent. Once you get to the interview stage, it’s all up to you. So all of this effort that you are putting into finding out which school is better is misplaced. All of the schools you’ve brought up have great CS programs that are in the same general tier. Performing decently at any of them will land you an interview (it’s not very hard to do this). Your performance at the interview is most of what determines whether you get the internship/job.</p>
<p>Edit: All of these companies maintain strong presences at all of the good CS schools. UIUC isn’t special in this regard.</p>