What Lisp do you guys use?s

I've recently discovered Scheme and I love it's simplicity. I only coded a bit in R5RS (Stallman's freedoms implementation). I want to use it for a serious project, an intranet portal backend.

Now I don't see myself mastering Common Lisp any time soon. I'm thinking of either Clojure or Racket. To be honest I don't like working with the JVM much. So besides Racket is there any other Lisps that I should check out?

Lisp is best left as an intermediary language. It's too verbose for me.