The editor is particularly important when it comes to being productive. I'm inexperienced with Lisp, and I've found a few things inside Visual Studio that I feel particularly reluctant to part with. "Go to Implementation" is one. I just move the mouse over a function call, press alt-G, and it takes me right to where that function is defined. Another is a complete list of defined procedures for the current file.
Does Lisp have an environment that has similar features?
Shawn