Thanks to everyone who weighed in yesterday on my version-control questions. I know it may seem like overkill, and I'm prepared to be made fun of, but I finally decided to go with Subversion (a/k/a SVN), which I'm running through Apache 2.2 with SSL on one of my boxes here.
A lot of factors came into play for me. We have several computers at home, and I like to be able to work on whichever one is convenient, which means it's nice to be able to grab the latest copies of drafts and my notes quickly from wherever I am. I need to be able to do this from outside our home network, in case I'm around the corner at the coffee shop, on the road, or over at the Writers Workspace. And since I obstinately continue to work in WordPerfect, I can't rely on solutions like Google Docs that are geared specifically toward Word files. Since I've been using CVS for years, SVN seemed like a natural step up for me, since it's similar but does a lot of things more smartly.
The coolest part of this whole setup, to me, is the SVN client I'm using, TortoiseSVN. This lets you access all the SVN commands from right-click menus directly in Windows Explorer. It also adds layover icons to the file icons so you can see at a glance what files and directories need to be committed. And SVN itself handles tasks like renaming and moving files and directories so much better than CVS, I wonder why I didn't start using it for code a long time ago.