How is Clojure? Common Lisp? Racket?

I've only ever used R5RS Scheme so with that in mind how do the main Lisp dialects today compare?

I want to write a web facing application in Lisp to see how it "feels". For the record I don't think I ever had as much fun programming as I did when I was using Scheme and I want experience that clear and concise magical thinking again.

>>6
le hackernews is not prog quality, I'm afraid.

well I suppose if you don't look at any of the [autistic and often incorrect] commments, it's alright for news.