Personally, on a G3, I'd stay on at least 9.1 or 9.2.2. Mac OS 9 is better tuned for the G3 than older releases, though you're right that there's not a great deal of functional difference between it and, say, 8.6 (8.5 brought in the new nanokernel and more of the OS was PPC-native, so I wouldn't...