Is there any real advantage to upgrading a PPC Mac to SSD? I still use my iBook G4 quite a bit as sort of an in-between my MBP and iPad for those times when I don't feel like hauling my MBP out to play but I need to use a full computer. I've been considering an SSD for it just for a little added zing, but I've read a few places that while it will boot OS X faster, speed-ups throughout aren't really that much of an improvement.