Fantim, for what it's worth, I'm also in the same boat as you. I've been accepted to both of those schools, as well as a couple others, and I'm trying to pick a path that will provide the most opportunity for PhD studies afterwards.
ParanoidAndroid is right, UBC has a thesis option, which offers you the opportunity to do some research and perhaps even publish. On the other hand, UofT only has the 8 month course-based program, but boasts a large stats department with some really reputable faculty. Also, you can do a project course at UofT, but to me this just isn't the same as having a whole extra summer and school year to do RA work and write a thesis. As for funding, after subtracting tuition fees from UBC's offer, I found that my offer from UofT was slightly better.
Even with this information, I'm still terribly undecided. Hopefully someone else will have some new insight!