I currently use racket-mode when doing Racket in Emacs. The main reason for doing so was simply that it was the easiest one to install. It's no SLIME, but it

I currently use racket-mode when doing Racket in Emacs. The main reason for doing so was simply that it was the easiest one to install. It's no SLIME, but it doesn't try to be, just provide some basic niceties and font-locking.