I'm going to learn lisp...

But does dialect matter? I went newb-mode and got the lispbox CLISP version, and it seems pretty normal to me, but does dialect/implementation really matter? Lispbox is only available for Windows with Allegro or CLISP, but does it matter that much?What's /prog/'s favorite implementation?

OP here. Is there some reason that I can't get emacs, slime, and SBCL to cooperate, or am I just a retard?