In my last trip to Toronto, i decided to give Hero Certified Burger a try, since it was close to our hotel and, most importantly, they have a veggie option for my girlfriend.
I went for the "Heavy Hitters" combo. The burgers are above OK and below WOW, compared to main chains (McDo, BK, Harvey's, etc.), they are definitively superior in both quality and -unfortunately- price.
If you are visiting the city on a budget and don't want to spend above $25 in a couple of combos avoid; in the other hand, if you want to eat a better-than-regular-chain burger I certainly recommend you this spot.