I am an international applicant to physics graduate program. And I have received two admissions recently:
Physics@Stony Brook, PHD, TA: $17000/First year.
Perimeter Scholars International (Theoretical Physics)@Primeter Institute, a Master degree from University of Waterloo, Fellowship.
I know stonybrook is a famous school, but PI also holds a good reputation in Canada. In addition, PSI is only a ten months taught program with some top faulty such as Dr. Philip Anderson from Princeton and Dr. Xiaogang Wen from MIT. But if I accepted there, I need to apply again next year

I am confused and the response deadline of PSI is near. Could you give me some advice please?