Notepad++, the first session
Notepad++ is doing pretty well. But I have two problems: First, I don't see a function for renaming files. I prefer not to "save as" sometimes and instead change a file's name. Two, when creating a file, I had a little trouble naming it. I wanted the .txt extension to be added automatically, and for some reason my file had .txt in the name and the extension. The latter could be operator error, the former ... well, I'll have to work on it.
However, lack of a "rename" function is not a deal-breaker.