tchiman27
Congratulations on your admissions. I too applied to MIT and Stanford but got rejected. However, my top choice has always been UIUC. I just dont know why i applied to the other two. If i were in your place, i would wait for UIUC since admission in Stanford means your profile is good. If you are offered funding at UIUC, i would suggest you go for it. Stanford is good but i really dont believe that we should pay so much for grad school.
As far as UMCP is concerned i dont have an idea about their program. However, for Masters, i would still prefer UMCP over Stanford if i get funding. After Masters, there may be more chances of getting funding at Stanford for PhD.
This is just my opinion on what i would have done if i were in your place. However, i must tell you that there is no way i can afford to pay the fees of even one year without taking loans. So i am obviously more inclined towards admission with funding.