Newfag questions about Lisp

Sup /prog/rammers.

Been working with Scheme (aka Racket) for a while and so far I find functional programming very nifty. And I hear you all lisp gods talking about the godlessness of Lisp, but I'm a bit confused because Common Lisp turns out to be just a specification and I can't find such thing as an "official" implementation of it, or figure out which implementation is the best/the one to use.

What are the best Lisp implementations for Windows and why?

And what are the substantial differences between Scheme and Lisp? And what makes people say Lisp is better?

Thank you.

>>3
Dead? Pretty much all major implementations are actively developed. It's no deader than any other Lisp or dog. You also have plenty of libraries being developed for CL and many implementation extensions which are getting more popular and being ported to other implementations. You probably won't get a third version of the ANSI standard, but this is hardly an issue.