IUPUI Vs UW Madison Vs UIUC

I have been accepted into IUPUI, UW Madison and UIUC. Since I have a 15K/year scholarship from IUPUI, attending either of the the other two schools would cost around 20K more per year. My question is, is it really worth spending more money on a highly ranked uni for an undergraduate degree? Ant input on this would be much appreciated.