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If you are looking to get solid software but don't have money to spend, why not just go with Google Apps or Open Office. Obviously, your needs will differ based on your major, but for the most part you need the basics - a decent word processor, a good calendar, and perhaps a spreadsheet. Either of those two options would provide those.
If you can afford to spend a little bit of money, Microsoft Office University is a good deal at $100 for students. Might want to consider that option as well.