As opposed to? Common Lisp and Emacs Lisp are both highly practical. Scheme you might call more academic, but that's not really what people think of when they say "Lisp".
As opposed to? Common Lisp and Emacs Lisp are both highly practical. Scheme you might call more academic, but that's not really what people think of when they say "Lisp".
Now SBCL in itself is rock-solid and a fantastic experience when used with emacs, but the CL ecosystem is insufficient to qualify as “highly practical”.
IMHO, the most practical lispy language is Racket: tight language, excellent stdlib, easy to package and deploy, and a development experience that worse than CL but good enough.
Seriously, is there a reason you have to hint about what Lisp you use?
If you are interested, I'm using LispWorks <http://www.lispworks.com>. The other large commercial Common Lisp implementation is Allegro CL <https://franz.com/products/allegro-common-lisp/>.
I suspect a lot of the dynamics of my choice are because I wasn't coming from any sort of Lisp background previously. If you were coming from Common Lisp then things would feel different.