University of Toronto Life Science for Premed?

Hi, I have to choose between U of T and an American state university for premed. Obviously, U of t is an amazing school but will its pros outweigh its cons in terms of me receiving admission into a USA medical school as I am a US Citizen. I have heard maintaining a high GPA is very difficult while it would be easier at the state school but there are greater opportunities, better city, and more prestige at U of T. Please any advice is helpful and money is not an issue.

Please any advice is helpful… I have to decide soon.