E-Reader Survey

Hello, This is my survey to find the best overall best E-reader in the market. The research is limited to few brands only. Your input will be valuable for the research for my project. Thanking you.
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    iPad 2
    Nook
    Sony Reader
    Amazon Kindle
    Kobo e-Reader
    Please enter one response per row
    iPad 2
    Nook
    Sony Reader
    Amazon Kindle
    Kobo e-Reader
    Please enter one response per row
    iPad 2
    Nook
    Sony Reader
    Amazon Kindle
    Kobo e-Reader
    Please enter one response per row
    iPad 2
    Nook
    Sony Reader
    Amazon Kindle
    Kobo e-Reader
    Please enter one response per row
    This is a required question
    This is a required question