This detailed explanation (thank you again raiph) confirms the gut feeling I have about Perl 6: it's the first language that looks MORE powerful and expressive than CL; it has also his own baroque elegance. My knowledge of the fine intricacies of programming is too rough to have a clear rational understanding of this aspect, but after having tried many languages I feel that Perl 6 is "just right" in so many nuances it seems a programmer's dream come true.

As far as speed and books coverage are concerned, well… I'm not concerned; optimization is on its way for what I can fathom and books are on the works. Maybe when Larry will release "Programming Perl 6" (the "butterfly book", or book series given the size of the language) I will be enough knowledgeable to understand fully all the nuances of such a big and deep language.

In my personal pantheon of languages (C-Zeus, Perl 5-Ares, CL-Aphrodite, Clojure-Artemis, Smalltalk-Ermes) Perl 6 is going to take the place of Athena, that was vacant since I couldn't find a language that was beautiful, powerful, deep and wise at the same time.