Which version of OSX to use?

[lofstudio]

I run 10.5 on my Intel iMac and MacBook Pro, but my wife has 10.4 on her 12" PowerBook. I tried installing 10.5 on it, but it felt slower. Whether 10.5 actually was slower, I don't know. I'd say 10.4 is about as high as you'd really want to go on a G4/G5. There's no really compelling reason to upgrade. What you get with Time Machine can be handled with SuperDuper or Carbon Copy Cloner.

Save2600-- have you tried SheepShaver for classic emulation?

[lofstudio]

@save2600:

You can download the Mac OS ROM Update from Apple's support site, or if you have a Mac capable of booting into OS 8.6-9.04, you can look in the system folder and use the "Mac OS ROM" file.