I've had an itch to buy a PPC Mac for a little over a year now. Almost bought one about 8 months ago but had to buy a car instead. So, that itch is coming back. I have a nice MBP so I don't need anything super awesome but I'm just looking to have the experience and play around with it, along with maybe playing some older PPC games (I have Diablo (II??)). I was planning on getting a PowerMac G4. Just because of the pro-audio thing and ADC connectors, thought that was cool. But I'm thinking of getting an iMac G5 instead. Is there a huge performance gain in the iMac, being a G5? I know when comparing Intel models the mac pro was a lot more powerful than an iMac, but these were different times. I don't think I can put OS 9 on the iMac though, correct? I do have a retail copy of Leopard so I can use that. If not, I guess I should sell it while there's still a good market for it.