Kindle offers s few advantages:
1) Send a Sample actually gives the first chapter on Kindle whereas on Kobo you see the first pages of comments on other books and the ISBN and copyright page, but no actual sample
2) Amazon has a Wish List to be able to track upcoming releases and wanted books
3) Amazon has a better search allowing to search an author by publication date etc.
4) There are lists of suggested books created by other users based on what you like
Kobo books are also available from Chapters online which makes gift certificates for Canadians to get. Although I don't know if the Indigo rewards card that gives %10 off works with ebooks.
All books offered on Kobo are available in Canada, no exchange needed
Supporting Canadian company is good!
