This tried-and-true bingsu store is definitely one of the better places I would come to have bingsu in the GTA.
I came on multiple occasions and they were all great every time. The ice actually tasted milky and flavorful combined with the condensed milk.
They aren't too skimpy on the toppings either.The smallest size is in a cup now and then their medium and large is in a bowl. Prices are very comparable and preferably worth the amount they give you.