Here is your TVFool.com report, based on your Postal Code:
http://www.tvfool.com/?option=com_wr...da32d2f2f678ad
It appears that the GTA transmitters are only about 40 KM from your location, and should be easy to get using a decent all-channel antenna. There are some digital stations currently operating from Toronto, and more that will come after August 31, 2011.
Most people from GTA can also see the Buffalo, NY stations if they use a proper antenna mounted on their roof. In your case, it would appear that the Buffalo stations will require a deep-fringe antenna, a rotator, and a high-input preamplifier. Please remember that ALL the US stations that you can receive are now digital, and will require either a digital-ready TV tuner or an outboard converter.
I can make specific recommendations if you like, but I believe that you should decide how far you'd like to pursue TV reception, then we can better advise you.