I've got a serious text editor fetish, and as such, it extends across devices. I've been on the lookout for a simple text editor for Android for a while now. There's complex software, with tagging support, SimpleNote sync and lots of other bells and whistles, and at the other end of the range there are really simple editors with no sync functionality at all.
And then I found Epistle. I've just started testing it, but so far I'm pretty excited about it. It's as simple as can be, with just one extra: it supports Dropbox sync, and the sync appears to work well. You create a note on the device, and it instantly appears in a Dropbox folder called epistle right at the root of your Dropbox. Update the note on the desktop, and it's updated on the device.Epistle's two main disadvantages at this point are that it doesn't let you pick a Dropbox folder manually but just adds a folder to your Dropbox root, and that it doesn't support right-to-left languages such as Hebrew and Arabic. Other than that, it's a fairly strong contender in the "simple editor" category.