You want Mellel and Bookends
I've never used Pages, but if you're going to be doing any academic work that involves footnoting and the like, I highly-highly-highly recommend
Mellel and
Bookends. I had used Word all through my undergraduate work, but being a Mac man, was always looking for something better, more Mac like.
These two programs work brilliantly together. Plus not having to deal with Word trying to fix things I didn't want fixed and formatting things I didn't want formatted and corrupting files I didn't want corrupted, was worth the price. Having said that, the price for the pair is less than $100 with student discounts, but if you're serious about your academic work, it's worth it.
I had a few formatting issues with Bookends, meaning that it wasn't reading records correctly from online sources. I e-mailed the developer and he was in constant e-mail contact until the issue was resolved. The Mellel community is great as well. I know this sounds like a commercial, but I've got no interest in either company other than I really enjoyed using their software to write my dissertation.
I'm in the real world now, as a technical author, and we use Word for some unknown reason. I dream of my days hammering away on my iBook G4 running Mellel. No crashes, no formatting issues. Just worked. I'm feeling all nostalgic now. 2005, where have you gone?