Developer @ttscoff created a website to help you pick an iOS text editor – iTextEditors

Silly plaintext lover
I’m always typing on my iPad or iPhone, and it seems like there are so many text editors out there, I never know if I’m using the one that is the best for me.
I don’t know if you’ve ever shopped for text editors before, but there are quite a few. I can’t tell you how awesome this webpage is to silly plain text lover. Hopefully it’s awesome to you too.
The List
Brett Terpstra has created a website where all of the iOS text editing apps are listed. They can easily be filtered by feature, device, and price.

This is a feature comparison of text editors on iOS. The information was compiled by the web community on an open Google spreadsheet. I cannot vouch for its current accuracy, but will be verifying everything as I’m able. It’s meant to help you find the most useful way to write, code or take notes for your personal needs. Every editor is geared toward a slightly different purpose, with their own strenghts and focus.

Terpstra
Terpstra has left it open so that corrections or additions can be made with a simple form. It should be pointed out that he is the developer for a Mac text editor called Marked, which is not available on iOS yet.
Go check out the list, and let me know what you think. Content generation like this is the reason the internet is awesome!