I used OpenOffice for YEARS, literally since it was just StarOffice. Recently I tried the new Microsoft Word 2010 and fell in love! I do a lot of writing and online submissions, and Word has removed a lot of the time I spent fighting with formatting issues after uploading my documents.
It has also saved a lot of time due to ease of use.
I feel like a traitor to OpenOffice, but by golly, Word 2010 is just plain easier to work with than OpenOffice--even after using OO as long as I have. I don't see myself switching to another word processor anytime in the near future as a result, though I must admit I was totally shocked at how much better I liked it over OO!

Microsoft Word 2010!