I use PSPad and VLIDE together. I like PSPad better for search, Indenting, syntax coloring, and the function list feature, which is wonderful for navigating large code projects. When it comes to troubleshooting though, nothing matches the go ol' VLIDE editor. PSPad is similar to Notepad++. I wrote and update the Visual Lisp syntax file for it.
The VLIDE editor is OK as far as the user interface, but is clunky IMHO. It also was crashing all the time when I tried changing the syntax colors (I despise the default colors).