I heard about this over the weekend. It looks like Literature & Latte is running a promo offer for Scrivener to all the people participating in NaNo this year. If you have been tempted but have not jumped yet now's your chance. At least five the trial period a chance. I'm sure you will find something in the program that you like.

http://www.literatureandlatte.com/nanowrimo.php

Jedi Moose