If you can afford anything SVS, I'd strongly recommend them. Their Canadian website is
HERE.
Way more BANG :P for the buck than anything you'll find in Future Shop, I'd reckon.
EDIT: Not everyone is keen on the idea, but I often recommend buying used when it comes to subwoofers, especially to those who are on a tight budget ($500 CDN is generally the starting point for good-ish-decent subs).
The
Buying/Selling area on digitalforum.ca (great recommendation, GATW), sometimes sees items like this pass through it. (You might need to register to the forum to view or post in the Bu/Sell area of the forum.)
Sometimes if you ask directly, SVS will offer discounts on open box, scratched, refurbished or demoed units sitting in stock.
There are usually dozens of subs for sale at any time on
AudiogoN, eBay, etc. The drawback in these situations is that you'll usually be forced to transact with someone from the States, which incurs certain other costs right away. Some good searching could unearth a gem, though.
Let us know how you do!