I've seen a lot of editorial written about system software choice for 68k Macs, but most of it has been lacking in one way or another. Some articles just boil down to "Choose based upon how much RAM you have" which is silly considering how cheap RAM is; Others only cover some System Software versions and neglect others.
This aims to correct that shortcoming by covering every 68k MacOS version and every 68k Mac I could think of. Check it out--I hope you'll like it, and find some useful advice!
The article is available at http://www.fenestrated.net/~macman/SysReview/