as a way to introduce myself to Macs. I am a tried and true desktop user, have two laptops but seldom use them. My latest PC build was a quad core Intel DX38BT with 4 gigs of DDR3 memory, so I am not a neophyte. I have become intersted in trying a Mac to peruse the OS. I have done an Ebay search for G5s with Leopard installed. They usually are in the $800 to $1K range which seems like a lot for a used box, but compared to $2-3K for a Pro does not seem as bad. Is there anything in particular to watch for in looking at G5s? I am not a gamer, so not an issue. I am just a power freak. Any suggestions would be great.