It is nice to see Guile still progressing. If only they had been this far along five years ago. For now, newLISP fits all my needs. It is like all the best bits of original LISP, Common Lisp, and Scheme, combined with bits from Rexx, Algol, SAIL, Perl, Python, and other languages, all packaged in a way that is intuitive to the Unix C programmer. I can't imagine LISP being any sweeter and Unixy than newLISP. And everything Guile does, newLISP does. And its garbage collection is faster, better, and consistent. Consistent enough for repeatable timing runs.