The more I use TaskPaper, the happier I am with it. Among other things, I’m finding its use of a standard text file format to be simple and brilliant. I use Dropbox to sync all my files among various devices. When I’m using something (say an iOS device) that I don’t have TaskPaper installed on, I can still reference my notes in a useful format–and even edit them. That’s incredibly useful. And the TaskPaper app itself provides exactly the functionality I need without a bunch of fluff I don’t care about.