In addition to cruising through the forum topics, take a look at the
wiki. You'll find a lot of technical information on all (or a serious majority) of the dedicated reading devices.
I own both a PRS-505 and a Kindle, so those are what I can speak most authoritatively about. I believe that you can actually by the Sony in Canada and that might be a good option for you. There are a large number of Sony users here on the forum who are strong advocates of that device. It's an excellent reader and I am very excited about the new cover with a Light Wedge. Hubby bought it for me a week or so ago and I'm enjoying the ability it gives me to read in low-light conditions.
Overall, though, my preferred device is the Kindle. While the Kindle is not sold in Canada and there is no wireless (cellular) connectivity for it within Canada, you could still purchase one if you can obtain a US credit card with a US mailing address. Once you own a Kindle, it's easy enough to buy books from Amazon, download to your computer and push to the Kindle via the USB cable. There are two main reasons why I prefer the Kindle -- the less-expensive availability of current releases from Amazon, and the ability to highlight and take notes and upload those to your PC.
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