Futureshop and BestBuy don't carry any of the manufacturers products that I want anyways, so i woudln't go there. Find a good reputable shop that will cut you a good deal on the products so that they can make their money on the installation.

Personally, I have no problem buying used if it is a really good price. I know it is risky, but if you are paying less than half of retail, then you can afford it if something goes wrong. Plus, it is hard to find PPI Art Series or the good old-school Orion products brand new these days

Regards,
Bryan