Another option would be to buy the Nook (because it's much nicer than the Kobo) but buy your ebooks through Chapters-Indigo in Canada or any of the Kobo ebook stores around the world. Kobo (who run the ebook store for Chapters-Indigo) uses standard Adobe DRM and any of these books can be read on a Nook. So, you won't be able to purchase books directly through the Nook but you will be able to buy books on your computer and read them on your Nook. You'll also have access to a bunch of other book stores (like Google or Sony).
I just looked at the Kobo at a Borders here in the States and I can't believe how cheap it feels. Very disappointing.
Just my two cents.