So i'm a pc user, have been wanting to switch to mac, however have only been able to own the Iphone. I am considering purchasing a used Mac mini g4 1.25 ghz 512/40 gb. I'm aware this is outdated and the memory is really small ( planning on storing a lot externally). What are your opinions on this? Any experiences with used macs either? Not using it for anything too series, mostly photoshop/garageband/browsing. Good idea?