I've been looking for a decent computer to run Leopard on and I was thinking maybe an iMac G4 considering decent ones are relatively cheap on eBay. I found a 1.25 GHz 17" with an 80 GB HDD for $140. It's only got 512 MB RAM, but I could always buy more. I don't need an Intel Mac considering I have a perfectly capable MacBook Pro with Retina running Mavericks. Should I go for a G5 or just stick with a G4?