I'm not clear on this, is any of the non-PC hardware listed stuff that you have? Or are you looking to buy? I dunno that $500 is going to get you all that far on a 4000 setup. On the other hand, G4s can be had quite cheaply ($10-50) if you know where to look, and you could save the rest towards a G5, but that depends on how much you like MorphOS...