I applied for universities in 2002 for Computer Science. I applied to UofT, YorkU, Carleton, Waterloo and Laurier. I got in all of them in the Computer Science program with an average of about 83 I think. I did not get any scholarships except for Carleton. Mind you, this was the time when OAC (grade 13 was in effect) - but I don't think that should make a difference.
I was also fortunate enough that my highschool offered AP courses, so i took AP Calculus and AP Physics. This meant that I basically aced my first year calculus and physics courses because the material from the AP course was almost identical
In the end I chose York because of location and also they had a brand new computer science building (new labs, new everything). I don't regret my decision, York U was awesome
I hope this helps