I have heard that this is the busiest Costco in Canada.
... I believe it.
While the long lines and high tensions would make you think I would give this store maybe a 2 or a 3 star rating (based on the fact that ALL Costco's are pretty much exactly the same aside from these factors!), I find that I feel impelled to give it a 4.
Perhaps it is my pride in our ability to make such a claim, perhaps it is because it is the first Costco that I frequently visited (other than the one I went to a few times when I lived in the Bay Area), but this one just feels like home.