From what I have heard, the second revision of the G5 where they started using PCI Express they got a lot of the previous issues with leaks and ROHS garbage sorted out. They even figured out how to locate the antennas too so that they wern't stuck in in a missive grounded box. From my last job it showed too because out of the many dead G5's we got in we never saw a Rev 2. We only ever heard of them being used by other people with no signs of trouble. I'd totally pay that much for a quad G5. It gives you the fastest possible PowerPC mac you can get with Classic backwards compatibility with damn near everything and it will last almost forever as well.