Liz, thanks for the advice. I actually don't live in the city - in York Region, just outside the GTA. I keep my bike inside our house here. But if I were to leave it anywhere, I would definetly slap on a heavy duty lock.
dcon, I think you're right... luckily I live north of the city and have good access to some decent roads/routes up here. Also, literally a 10 minute ride north of where I am and there are barely any cars on the road. So I guess it all depends on where you are.
Great hearing from you both