Does anybody have the recently discontinued dual 2.0gHz G5 Power Mac? (model M9747LL/A) This is the one with 160GB, 512 RAM, ATI 9600. Do you like it? Any regrets? I just bought a new, "left over" unit for short money ($1430) but am concerned that it is kind of a "stripped down" Power Mac. It doesn't have PCI-X slots like the previous model, and only has 4 RAM slots instead of 8... Thanks!