We use execulink for our provider at work. We needed a high speed line and one of the options mentioned was wireless. We ended up going with fiber, however i remember that they mentioned two nearby wireless towers were One London Place, as well as one of the Tricar buildings at southdale / wonderland.
Did execulink come back and say it wasn't feasable? it looks like their coverage map covers your area ( »www.execulink.ca/index.php/downl···207/407/
Another option would be Terago, however i'm unsure if they have residental options.