Seriously, if you're working in a Corporation you have to use MS office. I tried OpenOffice Google Docs all that stuff but no matter what there's compatibility format issues and MS office in the only way to avoid those. Independently those are all great and I would prefer to use those but it just is not possible at this time.
+1
We also have Pages and while we love using it, almost every work document I get sent ends up having compatibility issues when viewed in anything other than MS Word.
To the OP, if you're employed check with your employer if they have MSFT Home Use Program. I just found out that my employer has this program and MS Office for Mac Home & Business edition is $11 (retail $280) which is essentially free. I just downloaded it and I'll mostly be using it for Word alone but it also comes with Excel, Power Point, Outlook and a few other things.