[Foober223]

I don't use vim, but supposedly Paul Graham, the creator of this site uses vim for lisp. You really don't need that many fancy tools. Vim already has a visual hint for matching parens. It's nice to load stuff into the lisp image while you are typing but a quick keybind to switch to an external REPL and reload a file gets the job done.

Linux was crafted with just a basic editor, no IDE features. Unix was crafted without even a display to see the code being typed. Fancy tools are nice but not required.

But that said, SLIME in Emacs is the best. It's macro expansion buffer with really helps to understand what a macro does, or make things clear while crafting your own macros. Auto completion is great, although it only works for what is loaded int he live image, it doesn't scan source files for completion like a traditional IDE. Just load everything and completion is great.