I work for a company that needs me to work on their mac's quite a bit. I know about them from former jobs but id like to become more of an entheuist like i am with PCs. Im not looking to buy a new one just in case this is just a phase for me. so my question is what can i buy that will support 10.5 but not break my bank? Im looking to spend as little as possible but still get something that will support me toying around with the system and OS. maybe a early G4? or late G3?