Saw this on MacRumors and thought I'd share here. This is currently free, but will soon be $2.99 according to the developer. I really like what I've seen so far. Has so many customization options, color choices are great, can set the margins all the way to the edge, can double space, triple space, or really squeeze text closely together, and it has Dropbox integration.
Also has this feature where you can look stuff up on Wikipedia, Google, and then pin those links and save them for later. It can also summarize stuff, but that doesn't really work that well. Pulls out names and places and shows you their instances too.
Pretty good for a 1.0 indie app anyway.