Would an iPad mini be useful for etextbooks and notetaking? 16 or 32 GB?

I can't decide whether I want to get an iPad, iPad mini or just hold off for a while. I would like to use whichever iPad model for etextbooks, books, and for notes. Would a Mini be sufficient to my needs? Also, would a 16 GB model be good enough since I don't plan on putting my music and movies on it?

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