I live about 50 minutes from Cambridge/Waterloo/Kitchener. I'd totally move that way but my wife wants to stay close to her mom. If we made that move I'd be mortgage free after selling the Mississauga house for $200k more than the Guelph/Cambridge house would cost.

Still very limited job opportunities compared to US tech hubs, but the cost of living is indeed not out of control.

The biggest problem there is you have to be OK living in a place like Waterloo, which is great if you like suburbs and want lots of space, not so great of you're into city living.