I'm playing around with Clojure Box. It's a nice all in one Clojure development environment built on Emacs.
It's much easier to get running than trying to remember the command to get the REPL running. I've only run the command to get REPL running a few times--it's not like I ever close it.
Clojure Box is a nice way to get going with Clojure. I recommend giving Clojure Box, and giving Clojure, a try.