Which University of Toronto do you think would be best?

Hello all! I am currently a grade 11 student that is focusing his future on three areas; Math, Physics and Computers. I have an average in mid 80s with no mark under 75%. I have a very active extra curricular life in sports as well as I am the "Internet Technician" (a fancy name for website designer and operator) for my school. With these in mind I have decided to go the route through computers and possibly a mix of computers and math/physics. What would you suggest? My most interested portion of computer studies is programming although I have completed my A+ certification and my CCNA certification... I am wondering what university you think out of St. George, Scarborough, and Mississauga. (If you strongly think I should apply to another university post which one and why!.. I also will be applying to Waterloo but would rather not be in that area.. and would much rather be in the lively activity of Toronto!)