NaNoWriMo: What to write?

The NaNoWriMo website and forums were finally reset.  They usually do this a little earlier, to give us time to start planning and posting write-in details, but this year they ran a little late.  No matter -- everyone has still been busy in the interim, and once the forum was updated, it turned out we already had a kickoff party and a bunch of write-ins planned for our area.

I'm so excited NaNo is coming again, but this leaves me with the burning question: What am I going to write?

I have several options to choose between, all things I want to get done, so it'll just be whatever I decide I want most to benefit from the burst of motivation NaNo typically gives me.

1. Finish my NaNo '13 novel.  I achieved 50,000 words last November, but I didn't finish my novel.  That was my project all year long, most notably during both sessions of Camp NaNoWriMo, but unfortunately I was never able to finish it.  I could, in theory, do that this November.  I even have two weeks to finish revisions and outlining of what I wrote last year, which I was working on during the summer's Camp sessions.
2. Finish revisions on my first Ruby Ransome novel.  I got a little burnt out working on this about halfway through the revisions -- I marked all the pages, but only got a short ways through making the changes.  Last year my intention was to take a break, write something different, and then go back to making revisions.  Since I haven't succeeded in finishing my "break" novel, and I decided I really do want to, I haven't gotten back to Ruby Ransome.
3. Write a new Ruby Ransome novel.  This is always an option, of course, but right now it's the least appealing to me.  It would be fun to plan and start the next novel in the series, but it would also just add to the list of novels that I need to finish and revise.
4. Write something nonfiction.  I actually have a nonfiction ebook or two that I have been thinking of writing for several years now.  I don't know if one of those would actually be 50,000 words, but I could easily work on one of those in November instead of a novel.

Right now, I have to admit, I'm kinda leaning toward the fourth option.  Although I've been a NaNo Rebel before (and before there even was a name for such a thing), primarily because I've used NaNo to finish existing novels and used Camp to do revisions, I've never worked on anything nonfiction before.  It seems like it would be fun, though, and might give me an opportunity to get something out of my head that has been on the back burner for far too long.

What about you?  What are you going to write this November?  Are you a NaNo Rebel, too?