Yeah, that's good advice and I completely agree, reading all these helpful posts. More bang for the buck, going external.
Perhaps a beefy, honkin' 7200rpm external drive is best. I won't have to open the PowerBook and screw with any warranty issues. And I'll get a faster drive with no 80GB limitations on space, etc.
In a few more years, I'll buy a Rev. B or C 20" PowerBook G5 (
) with a stock 5400 or 7200rpm 160GB-plus drive (and still have the external one too).