The most cost effective and best value would be Paradigm or going with one of the SVS subs through their Canadian distributor. Importing subwoofers from the US to Canada is expensive and the final cost to your doorstep goes well beyond the actual shipping costs from the manufacturer.

This will give you an idea of the extra costs involved.

http://www.thefinalcost.com/

I’m armed and I’m drinking. You don’t want to listen to advice from me, amigo.

-Max Payne