I am a pc user and I am seriously considering buying a mac for the first time. This would be a significant investment for me and I want to get as much life out of the machine as possible. Given the fact that the G5 is an upgrade to 64 bit architecture, and software is going to move in that direction, would I be well advised to purchase a G5 now and make the additional investment rather than purchase the G4 iMac which I had originally intended to buy? Or should I wait until a G5 iMac comes out?