Re: which one should I choose?

Thanks for your reply... it seems that clisp doesn't fully support
cl-sdl, but cmucl does ... and since the graphics capabilities are more
important for what i have in mind than Windows, I'll probably use
cmucl.

As for exploring what Lisp has to offer, I am sure that on the way to
implementing my project (which is actually on evolutionary design and
far too ambitious) I will be doing just that.

Thanks again for your advice

.