I have been a Textastic user for nearly a year. I decided to switch simply because I did not want to pay for another copy of Textastic for my iPhone. Since Koder is a dual app, I switched (and for less than the cost of Textastic for iPhone).
I gotta say, I just love the workflow of this app. I can work with live files or download them for later and upload once the changes are complete.
Iukekini about Koder Code Editor