Preferrably Yonex. I only know of What's Your Racket and Ski and I heard their prices are pretty expensive. Looking for some good models like mp99 and nanos not like the ones in SportChek.
What's your racquet is probably the best place to buy racquets especially the ones that sportschek doesnt' have. If you tell them you are a Badminton Alberta Member they will give a 10% discount and if you pay by chase you don't have to pay GST. Also they will string your racquet for free when you purchase it.
yeah, you should check with the clubs first and foremost. in edmonton, the derrick club had 30% off all yonex merchandise a while ago. i'm not sure if they still have that promo going on still, however.