CygnusEd all the way. There is nothing better 
On AmigaOS4 I use CynusEd exclusively. On Windows I use a tiny editor that I wrote myself in Hollywood so it runs on Amiga too.
I prefer vi over emacs and like OED from A+L´s Amiga Oberon. I use a lot of editors and tend to use the shortcuts from the wrong one - causing maximum trouble.
For example CTRL-XS in VisualSlickEdit will kill the line the cursor is in and save.(Emacs will just save)
CMD-W will save in CygnusEd, but will close windows on all Mac software.