Hi, I finally decided to have a test-drive of slime, and I must say installation went _very_ smootly with cmucl-18e. This feels almost like opening the christmas-loot. That's about as far as I've come, but one thing that struck me was that M-, is not "FIND-NEXT-*".
I remember the keybindings being posted several times for comments somewhere (comp.lang.lisp I guess). At the time I was not paying attention, so feel free to file this under "too late", but just as one data-point I'll let you know that I would like it if slime switched from using the slime-specific "SLIME-FIND-DEFINITION-HISTORY-RING" into using the normal GLOBAL-MARK-RING. That way one could use C-X C-SPC for popping back, and have M-, free for some future SLIME-EDIT-NEXT-FDEFINITION. I know there have been cases where I had a previous and a current version of some system open, and being able to jump from a call-site to both old and new easily saved a _lot_ of time. That was using ilisp. There is also the case of g-fs that can legitimately have several methods with the same "name".