Serious city = super high density urban living
examples:Mexico City, Rio, Lagos, Shanghai, Hong Kong, Tokyo
Toronto is fantastic and a beatiful city but in the grand scale that the world has come too its not high density urban living. I mean I live basically downtown at Christie and Bloor and I can easily ride backstreets and barely hear another person.

I'll be doing some consulting there, seemed like a great place to live when I visited, besides the heinous pollution of course.