I've been to the Burger Priest on Queen and Spadina and without doubts this location is just as good. I've had their Low Priest through mealpal and their burgers are real juicy. Doesn't feel too heavy in my opinion and the environment is actually quite nice and ventilated.
Inside design is modern and spacious - more so than the location on Queen. You can dine in or do a quick grab and go as well.