1991 In Saskatoon was a turning point for this tournament. I'm old, so I can say that I was around before and after that event and old enough on both sides to remember. Before '91, this was a nothing tournament to Canadians. After...well...just look at what it has become.
Barring that, the one in Red Deer was very popular.
I personally love it when the tournament in held in smaller cities. I think there is something about small cities hosting that makes it even more exciting overall.