I'm switching between Nintype, MD Keyboard, and TextExpander. I probably could ditch TextExpander and do what I do with it with Nintype, and the same thing with MD Keyboard, but that's too crazy for my brain to deal with. 😛
Nintype comes with a nice note app. That alone is worth at least $2.99 because of how customizable it is, has custom actions too, I'm not sure if it's like Drafts because I haven't played with them yet and they leave you a blank canvas. The keyboard has all these weird settings for shortcuts. I actually have my .com button set to input my e-mail, phone number, and address.
MD Keyboard (by the guys who make UpWord Notes or whatever they're calling themselves now, heh) is like iKeywi, but is mostly geared towards Markdown. I have numbers for the first row, the usual ', ", #, *, @, [], and / as the next, and then time, date, blockquote, image, and link snippets, along with < and >. I tried adding additional stuff, but they were too heavy for it at this point.