Where are you in Toronto?
Do you have a car?
There's Greenbank, Holland Landing, Brampton, Burlington, Oshawa, Hamilton.
I did my license many years ago at Greenbank -- a good measure of a flying school is how long it takes to checkout somewhere else when you want to rent a plane -- one hour or less is a good number.
Traffic density when you're going flying is a big factor. I do not run up to Holland Landing weekdays after work, nor would I want to be going to Buttonville then.