I've been to this place several times and the allure of DIY stir-fry and the big round cooktop always keeps me coming back.
Out of most of the asian buffets in Toronto, Genghis Khan Mongolian Grill makes less of a dent in your wallet as opposed to the Mandarin for instance. To be fair, Mandarin has a bit more variety, but you're offsetting quantity with food cooked right before your eyes.
Don't expect too much from the already-cooked section. The taste is just alright, but there's a lot less to choose from. Maybe 5-6 items in the steamed section, and another 10 cooked items. There's a small salad section too, but honestly why would you go to a buffet for salad?
They also have a chocolate fountain set just a little bit away from the rest of the food. It's alright. There's always going to be at least one kid struggling to dip their strawberry or marshmallow in it. I question the cleanliness of the chocolate because of said kid though... haha...
Good stir-fry, good service. Good enough for me.