I know this is an old thread but I have also been using Epsilon for a very long time (since the early 80s) and wanted to share my experience.  I started out using "Brief" from a company called Underware and got used to the keyboard shortcuts.  After Borland drove that editor into the ground I looked for an editor that has Brief keyboard compatibility and Epsilon was what I ended up with.  There is an update in "beta" right now (4/20/2021) so it is still being developed.Here are some of my favorite features:
- Brief keyboard (of course)
- Split/resize screen as much as you want
- Open/edit files on remote host (great when you develop on Windows and deploy to Linux)
- Directory navigator (find and open files quickly--local host and remote host)
- HEX mode (I don't use it much but it sure is nice when you need it)
- Programmable (write scripts and assign to keyboard shortcuts)
- Macros (use this all the time)
- Visual DIFF
- Tabify (change spaces to tabs and vice versa)
- Format code (different languages)
- Compile with a keystroke (haven't used this for a few years)
- Column-based editing (select columns 13-56 and delete them--great when working with CSV type files).I realize other editors have many of these features and maybe there are a couple that have all of them, but I have never run accross one.