Boston vs UofT

Hi!

I have recently been accepted into both Boston University and the University of Toronto.
Boston -> Biochemistry and molecular biology (premed)
UofT -> Life Sciences (honours)

What are the main differences between the universities, and is there a clear winner? I know that the University of Toronto. is highly ranked in biological sciences, but I'm not sure if I'm not giving Boston a fair chance.

I understand both courses will be difficult, but I'm ok with that, I would just like to know which university will have the best transfer rate for postgraduate studies, the best professors, and more research opportunities.

Any advice or experience would be appreciated, thanks!