What sort of audio work is the G3 and G4 iBook capable of? I want to get an Apple laptop to learn more about osX. I know lots about PC based systems but not so much about Apples and a laptop would be nice. I want to run Logic Audio or Cubase SX... I don't want to do really heavy audio work as I have my main system for that but I want to do a bit of stuff... for example some live multitrack recording or a bit of mixing. How much stuff can the G3 do? Can I run a reasonable number of plug-in and tracks? Reverb, compressors, guitar amp simulators?