If you love experimenting with different burger styles, you must try HopDoddy! They use premium meat and there's no burger on their menu that disappoints. Even the black bean burger is good and it's vegetarian.
They have an amazing happy hour where you can get the burger of the week for $5. I recently had their Poutine burger... and it tasted like heaven.
Also their customer service is exceptional. They're always there to assist. I will definitely be back again.
The only thing that I wish, is that they had is better soda. I'm just not a huge fan of their fountain drinks. The only decent one is the lemon lime soda, because it tastes like Sprite.