Also, about the whole rep thing- many people may disagree with me, but I have done extensive research on the internet, and have even asked an admissions officer at the University of Toronto, and sources have confirmed with the fact that ultimately, graduate schools do NOT consider a universities reputation when looking at applicants. What they do care about is grades, the MCAT (for medicine), or LSAT (for law), your personal statement, references, and work experience. I know many are going to dispute this point, and say that going to a more reputable institution is always better than going to a less reputable one, and I'm going to argue that this is only true AFTER you get out of graduate school, when seeking employment. Then again, by that time what is more important than where you studied for undergrad is much less significant than where you studied for graduate school...so in my opinion, based on what you've told me, I would say forget about reputation and go to York if you this that university is right for you. It really won't hurt your chances.
P.S. I'm considering med school. I've done research on York too. It seems like they produce a fair number of medical students going to Canada, U.S., and other foreign countries.
All the best