Hey, After reading through the forums here quite often, I thought it's finally time to register, so hey all! I am planing to get a Mac Pro, preferably a 3.1, in the near future. Since this is my first "real, big mac" (lol), I really don't have to much of a plan what to pay for it. I had in mind to probably get a 8-core one, with atleast 8 gigs of RAM (preferably 16GB). HDD and Graphics don't really matter (btw, are the only compatible 5770's the one's that Apple sell, or are the ones that Sapphire or XFX, for example, manufacture also working inside of it? Quite curious about this!) I saw some @ ebay, but the prices there are quite random I think. So what would one be worth nowadays? Thanks!