I'm planning on starting up again with college in early December, it's gonna be an online college that only uses etextbooks. I plan on taking 4-5 classes per semester. The only thing that I have had trouble with is trying to gauge what size iPad to get. Right now, I have a 16gb iPhone 4, that has 4gb left of memory on it. I'm not too familiar with the file sizes of pdf's, or whatever extension etextbooks come. Right now, I'm leaning towards the 32gb model. I would rather have too much then not enough. Does anyone here have any experience with using the iPad for college textbooks? Any suggestions would be appreciated, thanks.