I want to get a Mac that can support Classic OS for my classic games and also support OS 10.5 for some of my OS X games. I would like to have classic on one HD and X on the other. What is the fastest mac I can get that is capable of doing this. I currently have a DP G4 1.8 GHZ and it has been a nightmare doing anything classic including OS 10.4. I realize classic is not supported by my mac so I am going to downgrade so to speak. Please enlighten me. Thanks.