I see your point about Scheme. I had wanted to stay with a Lisp, since the Scheme family has a different orientation, with the emphasis on functional techniques

I see your point about Scheme. I had wanted to stay with a Lisp, since the Scheme family has a different orientation, with the emphasis on functional techniques among other things. But maybe the more powerful macro system would justify the extra learning load. I would need some convincing with J, though. I've studied both and I thought APL had much better tutorial material, development tools, and conceptual straightforwardness. I didn't stick with J for very long, so I'm sure I missed important aspects of its use. Could you explain some ways in which you think J gives a better demonstration of the possibilities of the array-oriented paradigm?